ANGELO ORESTE ANDRISANO - personale UniMoRe

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ANGELO ORESTE ANDRISANO

Professore emerito
Dipartimento di Ingegneria "Enzo Ferrari"

Pubblicazioni

2020 - A Multi-disciplinary Assessments Tool for Human-Machine Interaction [Capitolo/Saggio]
Peruzzini, Margherita; Grandi, Fabio; Pellicciari, Marcello; Berselli, Giovanni; Andrisano, Angelo Oreste
abstract

Human-centered design is based on the satisfaction of the user needs mainly related to performances, interaction, usability, accessibility, and visibility issues. However, the quality of the interaction process is hidden and usually difficult to detect. The paper proposes a multi-disciplinary assessment tool for the evaluation of the human-machine interaction, based on the collection of physiological data and anthropometrical performance data. Such a method can be used both within on-field tests and virtual simulations, supporting the spread of digital approaches in industry. The methodology allows objectifying how users interact with machine or interface items, thanks to the collection of the users’ performance during task execution, the digitalization of collected data, and the evaluation of users’ physical and mental workload. Such a system has been applied to an industrial case study focusing on agricultural machinery driving and control to support the system re-design in terms of interface features, commands’ location and grouping, and positioning of additional devices.

2020 - Design Tools and Methods in Industrial Engineering, Proceedings of the International Conference on Design Tools and Methods in Industrial Engineering, ADM 2019 [Curatela]
Rizzi, Caterina; Andrisano, Angelo Oreste; Leali, Francesco; Gherardini, Francesco; Pini, Fabio; Vergnano, Alberto
abstract

This book collects the proceedings of the ADM 2019 International Conference, entitled “Design Tools and Methods in Industrial Engineering”, held in Modena, Italy, on 9–10 September 2019. This is not the first time that an event organized by ADM (formerly known as Italian Association of Machines Design, today renamed the Italian Association of Design Methods for Industrial Engineering) or by our scientific sector (ING-IND/15) takes place in Modena. I am pleased to remember the “ADM day” held at the Military Academy of Modena in 2008, as well as the ING-IND/15 workshop organized in 2009 in the hills of Bologna, not far from Modena. However, this conference is particularly significant, for the reasons I wish to summarize here. Firstly, the ADM Conference constitutes a new international, permanent event held in Italy, aimed at disseminating cutting-edge research to a national and international audience. For several years, our association has had a collaborative relationship with the Spanish members of INGEGRAF and the French members of Smart (formerly AIP-PRIMECA), with whom we organize the International Joint Conference on Mechanics, Design Engineering and Advanced Manufacturing (JCM) every two years. This event is hosted alternately by one of our three countries. Therefore, the ADM International Conference was born from the need for an event “in the middle”, to strengthen the international research network and to meet our colleagues in Italy. As a matter of fact, the ADM 2019 scientific committee was joined by Spanish and French colleagues, as well as German, Swedish, Norwegian and American ones, thanks to partnerships created by our “Enzo Ferrari” Department of Engineering (Modena) over the years. Secondly, I am honoured to play the role of conference chair, a position that has led me to be one of the editors of this book. In more than 45 years of experience in this sector, I have seen many developments and evolutions. From the first use of CAD in the industrial sector, today we have reached a high multidisciplinary level and integration with information technology and electronics. The integration of novel tools and approaches in the industrial world is also due to the activity of our scientific sector, capable of developing and integrating innovative tools and methodologies with the traditional themes of industrial engineering. Finally, this conference is held in 2019, an important year for me, marking the conclusion of my mandate as Rector of the University of Modena and Reggio Emilia, as well as that of Full Professor for our scientific sector. As the Dean of the ADM association and the scientific sector, I enthusiastically accepted the proposal of Francesco Leali, my collaborator for years and now my colleague, to nominate the University of Modena and Reggio Emilia, and in particular our “Enzo Ferrari” Department of Engineering, as the location for the ADM 2019 International Conference. I would like to thank both him and my departmental colleagues, in particular the researchers of my lab, LaPIS lab, for organizing this event at the “Enzo Ferrari” Department of Engineering, so dear to me, having been one of its first promoters and founders. Equally, I would like to thank the ADM President Prof. Vincenzo Nigrelli, and Prof. Caterina Rizzi, Coordinator of the ADM Scientific Council, whose members, in turn, I gratefully thank. Further thanks go to the publisher, Springer, who honoured us by publishing the proceedings of this first ADM International Conference in the series “Lecture Notes in Mechanical Engineering”. Therefore, as editor of this first book, I hope that it will be the first of a new series of international conference proceedings underlining the leading role of our scientific sector in the international scene. The colleagues who will be hosting the next ADM conferences will have the burden, but above all the honour, of continuing this project that today we have

2019 - Interazioni di risonanza e localizzazioni di energia in nanotubi di carbonio [Abstract in Atti di Convegno]
Andrisano, A. O.; Manevitch, L. I.; Pellicano, Francesco; Strozzi, Matteo
abstract

2019 - UNA CONFIGURACIÓN DE REALIDAD VIRTUAL MULTIMODAL PARA EL DISEÑO CENTRADO EN EL SER HUMANO DE ESTACIONES DE TRABAJO INDUSTRIALES [Articolo su rivista]
Peruzzini, Margherita; Pellicciari, Marcello; Grandi, Fabio; ORESTE ANDRISANO, Angelo
abstract

Although the so-called Industry 4.0 trend is promoting the increasing automation of processes in the factories of the future, manual activities still play an extremely important role within the factory and human factors greatly affect the process performance. However, the analysis of human- machine interaction and the prediction of human performance in industry are difficult but crucial to have an optimized design of workspaces and interfaces, reducing time and cost of implementation, and avoiding late design changes. This research adopts a multimodal human-centered approach for the analysis of human-machine interaction, and proposes a multimodal experimental set-up for the evaluation of the workers’ experience to support the design of industrial workstations. The set-up combines virtual mock-ups, interaction with both physical and virtual objects, and monitoring sensors to track users and analyze their actions and reactions. It allows creating a multimodal environment able to deepen the interaction between humans and systems or interfaces, to support design activities. Indeed, it has been demonstrated that the analysis of the reactions of the users involved, allows to evaluate the quality of the interaction, identify the critical issues, define corrective actions, and propose guidelines for system design or redesign [1]. The paper describes the application of the proposed set-up on two industrial case studies and reports the main results.

2017 - Human-centred design of ergonomic workstations on interactive digital mock-ups [Capitolo/Saggio]
Peruzzini, Margherita; Carassai, Stefano; Pellicciari, Marcello; Andrisano, Angelo Oreste
abstract

Analysis of human-related aspects is fundamental to guarantee workers’ wellbeing, which directly limits errors and risks during task execution, increases productivity, and reduces cost [1]. In this context, virtual prototypes and Digital Human Models (DHMs) can be used to simulate and optimize human performances in advance, before the creation of the real machine, plant or facility. The research defines a human-centred methodology and advanced Virtual Reality (VR) technologies to support the design of ergonomic workstations. The methodology considers both physical and cognitive ergonomics and defines a proper set of metrics to assess human factors. The advanced virtual immersive environment creates highly realistic and interactive simulations where human performance can be anticipated and assessed from the early design stages. Experimentation is carried out on an industrial case study in pipe industry.

2016 - APPLICAZIONE DELLA NORMA ISO 16792:2006 PER LA SPECIFICAZIONE GEOMETRICA DI PRODOTTO 3D IN AMBITO AUTOMOTIVE [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Gherardini, Francesco; Renzi, Cristina; Bonazzi, Enrico; Leali, Francesco
abstract

Accanto alla documentazione tecnica di prodotto mediante disegni ed annotazioni 2D, nella pratica industriale è fortemente sentita l’esigenza di gestire le informazioni tecniche di prodotto direttamente nell’ambiente di modellazione CAD 3D. Con l’obiettivo di migliorare la gestione del ciclo di vita di prodotto tramite modelli 3D, i produttori di software CAD 3D commerciali e l’industria stessa, soprattutto in ambito automotive ed aerospace, hanno generato molteplici soluzioni che tuttavia risultano individualizzate e non univoche. La normativa tecnica ISO definisce linee guida per la specificazione geometrica di prodotto 3D, che tuttavia risultano solamente in parte accolte da un punto di vista industriale e commerciale. In questo scenario, il presente studio vuole verificare l’implementazione dei contenuti della norma ISO 16792:2006 in alcuni CAD 3D commerciali selezionati. Mediante un benchmark industriale opportunamente identificato, i CAD 3D sono comparati sulla base di criteri redatti secondo la norma ISO 16792:2006 stessa. I risultati ottenuti permettono di individuare, per ogni CAD 3D analizzato, eventuali gap operativi ed i relativi interventi volti a garantire il raggiungimento di un livello comune di applicabilità della norma e di leggibilità della documentazione tecnica 3D generata.

2016 - An engineering method for the power flow assessment in servo-actuated automated machinery: Mechatronic modeling and experimental evaluation [Articolo su rivista]
Berselli, Giovanni; Pellicciari, Marcello; Andrisano, Angelo Oreste
abstract

In this paper, an engineering method for the power flow assessment of a position-controlled servomechanism is outlined. The considered system is composed of a permanent magnet synchronous motor coupled to a standard power converter, and directly connected to a slider crank mechanism. After the accurate description of a consistent power flow model, a sequential identification technique is discussed, which allows to determine the dynamic parameters of linkage, electric motor and electronic driver by means of non-invasive experimental measures. The proposed model allows to accurately predict the major sources of power loss within the system.

2016 - Design to Cost of automatic machines: an industrial case study [Relazione in Atti di Convegno]
Peruzzini, Margherita; Campioli, Tommaso; Andrisano, Angelo Oreste; Pellicciari, Marcello
abstract

One of the biggest unsolved problems of modern industry is the control of the ratio between cost and performance of complex machines from the early stages of design. Indeed, it requires a synthetic analysis of manufacturing knowledge and a successful collaboration among the numerous actors involved in cost and performance evaluation. Although some methodologies and different theoretical approaches have been defined, effective implementation is still far from reality due to hard implementation that takes a lot of time and requires a strong collaboration among highly specialized resources with different background and expertise. In such context, this paper presents a methodology integrating Design for Manufacturing and Assembly (DFMA) principles, Design To Cost (DTC) and Value Analysis (VA) to optimize complex system design from the conceptual stages. It presents an industrial case study focused on the re-design of a machine for automated management of drugs, where an interdisciplinary team act to identify cost / performance imbalances and optimize the overall design. The machine re-design brought to a global cost saving of about 20% and a sensible improvement of the global product sustainability and reliability due to product structure simplification, selection of improved design solutions and optimization of some manufacturing processes.

2016 - Modelling and Testing Techniques for Gear- boxes Analysis and Optimization [Relazione in Atti di Convegno]
Andrisano, A. O.; Pellicano, Francesco; Barbieri, Marco; Zippo, Antonio; Strozzi, Matteo
abstract

2016 - Natural Frequencies of Triple-Walled Carbon Nanotubes [Relazione in Atti di Convegno]
Andrisano, A. O.; Pellicano, Francesco; Strozzi, Matteo
abstract

2016 - Virtual Prototyping of a Compliant Spindle for Robotic Deburring [Capitolo/Saggio]
Berselli, Giovanni; Pellicciari, Marcello; Bigi, Gabriele; Andrisano, Angelo Oreste
abstract

At the current state-of-the-art, Robotic Deburring (RD) has been successfully adopted in many industrial applications, but it still needs improvements in terms of final quality. In fact, the effectiveness of a RD process is highly influenced by the limited accuracyof the robot motions and by the unpredictable variety of burr size/shape. Tool compliance partially solves the problem, although dedicated engineering design tools are strictly needed, in order to identify those optimized parameters and RD strategies that allow achieving the best quality and cost-effectiveness. In this context, the present paper proposes a CAD-based Virtual Prototype (VP) of a pneumatic compliant spindle, suitable to assess the process efficiency in different case scenarios. The proposed VP is created by integrating a 3D multi-body model of the spindle mechanical structure with the behavioural model of the process forces, as adapted from previous literature. Numerical simulations are provided, concerning the prediction of both cutting forces and surface finishing accuracy.

2015 - Nonlinear dynamics of carbon nanotubes [Relazione in Atti di Convegno]
Andrisano, A. O.; Pellicano, F.; Strozzi, M.
abstract

2015 - Towards Energy-Optimal Layout Design of Robotic Work Cells [Relazione in Atti di Convegno]
Gadaleta, Michele; Pellicciari, Marcello; Andrisano, Angelo Oreste
abstract

This paper presents a new method for optimizing the layout position of an Industrial Robot (IR) in order to execute a specified task with the minimum energy consumption. First, using the Modelica language, an IR mechatronic model is developed, focusing on computational efficiency: addressing the power flow from the electrical network, the sub-system components are modeled with the level of detail strictly necessary for an accurate prediction of the power consumption, while assuring efficient computational efforts. Once a robot task is assigned, the optimal layout IR position is calculated using optimization techniques that retrieve the robot base position corresponding to the minimum energy consumption. Additionally, the designer can optimize the overall robotic work cell with the aid of a set of colour/contour maps that depict the energy demand along with the time required for the task completion. Development, simulation and optimization phases are performed in Dymola environment.

2014 - A review on artificial intelligence applications to the optimal design of dedicated and reconfigurable manufacturing systems [Articolo su rivista]
Renzi, Cristina; Leali, Francesco; Cavazzuti, Marco; Andrisano, Angelo Oreste
abstract

Reconfigurable manufacturing systems (RMS) are considered the future of manufacturing, being able to overcome both dedicated (DMS) and flexible manufacturing systems (FMS). In fact, they provide significant cost and time reductions in the launch of new products, and in the integration of new manufacturing processes into existing systems. The goals of RMS design are the extension of the production variety, the adaption to rapid changes in the market demand, and the minimization of the investment costs. Despite the interest of many authors, the debate on RMS is still open due to the lack of practical applications. This work is a review of the state-of-the-art on the design of cellular RMS, compared to DMS, by means of optimization. The problem addressed belongs to the NP-Hard family of combinatorial problem. The focus is on non-exact meta-heuristic and artificial intelligence methods, since these have been proven to be effective and robust in solving complex manufacturing design problems. A wide investigation on the most recurrent techniques in DMS and RMS literature is performed at first. A critical analysis over these techniques is given in the end.

2014 - An Engineering Method for Comparing Selectively Compliant Joints in Robotic Structures [Articolo su rivista]
Berselli, Giovanni; A., Guerra; G., Vassura; Andrisano, Angelo Oreste
abstract

Large displacement compliant joints can substitute traditional kinematic pairs in robotic articulated structures for increasing ease-of-assembly, robustness, and safety. Nonetheless, besides their limited motion capabilities, compliant joints might be subjected to undesired spatial deformations which can deteriorate the system stability and performance whenever a low number of control inputs is available. In all these cases, it is convenient to select/design joint morphologies which enable a selectively compliant behavior, i.e., a low stiffness along a single desired direction. Within this context, this paper outlines an engineering method for quantifying the joint's selective compliance by means of local and global performance indices. The approach is validated by comparing two beam-like flexures whose analytic solution is known from the literature. Finally, two joint morphologies, previously employed in the fabrication of robotic/prosthetic hands, are critically compared on the basis of the proposed criteria.

2014 - Nonlinear oscillations and energy localization in carbon nanotubes [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Manevitch, Leonid I.; Pellicano, Francesco; Strozzi, Matteo
abstract

In this paper, the low-frequency nonlinear oscillations and energy localizations of Single-Walled Carbon Nanotubes (SWNTs) are analysed. The SWNTs dynamics is studied within the framework of the Sanders-Koiter thin shell theory. The circumferential flexure vibration modes (CFMs) are considered. Simply supported boundary conditions are investigated. Two different approaches are compared, based on numerical and analytical models. The numerical model uses a double series expansion for the displacement fields based on the Chebyshev polynomials and harmonic functions. The Lagrange equations are considered to obtain a set of nonlinear ordinary differential equations of motion which are solved using the implicit Runge-Kutta numerical method. The analytical model considers a reduced form of the shell theory assuming small circumferential and tangential shear deformations. The Galerkin procedure is used to get the nonlinear ordinary differential equations of motion which are solved using the multiple scales analytical method. The natural frequencies obtained by considering the two approaches are compared in linear field. The effect of the aspect ratio on the analytic and numerical values of the localization threshold is investigated in nonlinear field.

2013 - Nonlinear vibrations and energy distribution of carbon nanotubes [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Manevitch, Leonid I.; Pellicano, Francesco; Strozzi, Matteo
abstract

The nonlinear vibrations of Single-Walled Carbon Nanotubes are analysed. The Sanders-Koiter thin shell theory is applied in order to obtain the elastic strain and kinetic energy. The carbon nanotube deformation is described in terms of axial, circumferential and radial displacement fields. The theory considers geometric nonlinearities due to large amplitude of vibration. The displacement fields are expanded by means of a double series based on harmonic functions for the circumferential variable and Chebyshev polynomials for the longitudinal variable. The Rayleigh-Ritz method is applied to obtain approximate natural frequencies and mode shapes. Free boundary conditions are considered. In the nonlinear analysis, the three displacement fields are re-expanded by using approximate eigenfunctions. An energy approach based on the Lagrange equations is then considered to obtain a set of nonlinear ordinary differential equations. The total energy distribution of the shell is studied by considering combinations of different vibration modes. The effect of the conjugate modes is analysed.

2013 - Selecting alternatives in the conceptual design phase: an application of Fuzzy-AHP and Pugh’s Controlled Convergence [Articolo su rivista]
Renzi, Cristina; Leali, Francesco; Pellicciari, Marcello; Andrisano, Angelo Oreste; Berselli, Giovanni
abstract

The selection of conceptual design alternatives is crucial in product development. This is due both to the fact that an iterative process is required to solve the problem and that communication among design team members should be optimized. In addition, several design constraints need to be respected. Although the literature offers several alternative selection methods, to date, only very few are currently being used in industry. A comparison of the various approaches would improve the knowledge transfer between design research and practice, helping practitioners to approach these decision support tools more effectively. This paper proposes a structured comparison of two decision support methods, namely the Fuzzy-Analytic Hierarchy Process and Pugh’s Controlled Convergence. From the literature debate regarding selection methods, four relevant criteria are identiﬁed: computational effort, suitability for the early design stages, suitability for group decision making, and ease of application. Finally a sensitivity analysis is proposed to test the robustness of each method. An industrial case study is described regarding an innovative and low-cost solution to increase the duration of heel tips in women’s shoes. The selection of conceptual design alternatives of the heel tip presents complex challenges because of the extremely difﬁcult geometric constraints and demanding design criteria.

2012 - Enhancing changeability of automotive Hybrid Reconfigurable Systems in digital environments [Articolo su rivista]
Pellicciari, Marcello; Leali, Francesco; Andrisano, Angelo Oreste; Pini, Fabio
abstract

Changeability accomplishes the engineering design of competitive sustainable manufacturing systems, considered as industrial products characterized by inherent life cycle. Main drivers for changeability are manufacturing system reconfigurability and hybridization. A Hybrid Reconfigurable System (H-RS) is characterized by the coexistence and cooperation of industrial robots and skilled human workers to perform complex tasks within a common reconfigurable production environment. H-RSs rise use-productivity along their total system life cycle, fostering the evaluation and implementation of feasible and innovative technologies, and increasing the utilization ratio and the multiple use—or re-use—of resources. The paper proposes an engineering method which aims at enhancing changeability in H-RSs through the application of a multi level reconfigurability approach within a digital environment. The method includes the advanced design and modeling of digital devices which embed mechanics, electronics, control logic and software code. Advanced models are exploited to analyze the system performance in the system domain of changes and to realize an effective human training. An industrial case study describes the application of the method to the design of a hybrid reconfigurable workcell for manufacturing and assembly of top class car chassis.

2012 - Hybrid Reconﬁgurable System design and optimization through virtual prototyping and digital manufacturing tools [Articolo su rivista]
Andrisano, Angelo Oreste; Leali, Francesco; Pellicciari, Marcello; Pini, Fabio; Vergnano, Alberto
abstract

Engineering changeability-oriented and cost-driven approaches are needed by enterprises to design and optimize manufacturing and assembly systems for the demanding production requirements of the present industrial scenario. The integrated design of Reconﬁgurable Systems addresses tailored ﬂexibility through modularity, integrability of resources, product and process customization, and system convertibility and diagnosability. The cooperation of robot and humans in hybrid environments offers a good trade-off between changeability, high quality and low costs, by exploiting the human dexterity and cognitive proactivity, together with robotic accuracy and performances. Virtual prototyping methods and digital manufacturing solutions are now mature and effective enough to play a strategic role within the hybrid reconﬁgurable system (H-RS) design and optimization process. The present research work proposes an engineering method to design and optimize H-RSs, by using virtual prototyping and digital manufacturing as a strategic support for the analysis and synthesis of the technical solutions, especially those related to human-robot cooperation. An industrial case study on a hybrid reconﬁgurable assembly system of a top class car aluminum chassis is ﬁnally presented.

2012 - Metodo di progettazione di sistemi di fixture per l’assemblaggio di telai automobilistici mediante analisi di sensibilità [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Ansaloni, Matteo; Berselli, Giovanni; Bonazzi, Enrico; Gherardini, Francesco; Leali, Francesco; Pellicciari, Marcello; Pini, Fabio; Renzi, Cristina; Vergnano, Alberto
abstract

I sistemi di fixture influenzano enormemente i processi di assemblaggio in molti campi della meccanica, in quanto influiscono direttamente sul calcolo della catena di tolleranza. La memoria illustra un metodo di progettazione che permette di comparare e valutare differenti sistemi di fissaggio, considerando sia la posizione che il tipo di locatori. Poiché i sistemi di fixture possono essere considerati dei sistemi multi-prestazionali, il confronto viene eseguito attraverso l’impiego di opportuni indici di sensibilità. Il metodo è stato applicato ad un caso di studio in ambito automotive relativo alla saldatura in continuo di estrusi in allumino, con l’obiettivo di garantire misure di gap con la minore variabilità possibile.

2012 - Nonlinear vibrations of functionally graded cylindrical shells: effect of the companion mode participation [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Pellicano, Francesco; Strozzi, Matteo
abstract

In this paper, the effect of the companion mode participation on the nonlinear vibrations of functionally graded (FGM) cylindrical shells is analyzed. The Sanders-Koiter theory is applied to model the nonlinear dynamics of the system in the case of finite amplitude of vibration. The shell deformation is described in terms of longitudinal, circumferential and radial displacement fields. Simply supported boundary conditions are considered. The displacement fields are expanded by means of a double mixed series based on Chebyshev polynomials for the longitudinal variable and harmonic functions for the circumferential variable. Both driven and companion modes are considered. Numerical analyses are carried out in order to characterize the nonlinear response when the shell is subjected to an harmonic external load. A convergence analysis is carried out by considering a different number of axisymmetric and asymmetric modes. The present study is focused on modelling the nonlinear travelling-wave response of the shell in the circumferential direction with the companion mode participation.

2012 - Selecting alternatives in the conceptual design phase: application of Fuzzy-AHP and Pugh’s controlled convergence [Relazione in Atti di Convegno]
Pellicciari, Marcello; Renzi, Cristina; Leali, Francesco; Andrisano, Angelo Oreste; Berselli, Giovanni
abstract

Purpose: Conceptual design and, in particular, selection of conceptual design alternatives are proved to be crucial issues in product development. Selecting alternatives is a complex multicriteria decision making problem and represents a challenging task for engineering designers. Many different methods and techniques have been presented by literature in the last years but just a little use of them is often made by industry, due to several causes. One of them is that more efforts should be spent in presenting clear comparisons between the various approaches from an engineering design point of view. Such problem is tackled by the present paper which proposes the pairwise comparison of two of the most representative and widely used decision support methods. Method: The paper describes, implements and compares within a common framework the Fuzzy-Analytic Hierarchy Process (F-AHP) and the Pugh’s Controlled Convergence (PuCC) methods. A structured analysis of the results obtained by applying them to a common industrial case study is proposed. Four engineering criteria are adopted for their evaluation: complexity of computation, rating of alternatives, compatibility with group decisions making and approach suitability from an early design perspective. Result: The methods are evaluated with respect to a case study focused on the proposal of an innovative and low-cost solution for increasing the duration of heel tips in feminine shoes. The selection of the heel tip conceptual design alternatives presents complex design challenges because of the extremely hard geometric constraints and demanding design criteria. A decision making team is grouped by involving experts from the heels manufacturing industry, designers and manufacturers. Finally a sensitivity analysis is performed to investigate the dependence between the results and the preference weights. Discussion & Conclusion: Conceptual design is part of a heuristic process which requires an iterative approach for searching and manipulating solutions to find new hybrid technical alternatives, and for enhancing the communication within the design team. With respect to such scenario, PuCC seems, without doubts, to be more suitable than F-AHP for selection purposes. Nevertheless, especially for industrial purposes, the latter method has a more analytic form, that makes it proper for a software implementation and, consequently, more useful for engineering applications.

2011 - A novel method for sensitivity analysis and characterization in integrated engineering design [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Ansaloni, Matteo; Leali, Francesco; Pellicciari, Marcello; Vergnano, Alberto
abstract

Purpose:The present research work aims to analyze and characterize processes in terms of sensitivity of their performances. Robust design techniques, generally adopted for product and process optimization, are not suited for investigating sensitivity. Then a novel approach to such engineering problem needs to be proposed.Method:The developed method integrates and extends to the analysis of manufacturing and technological processes the Performance Sensitivity Distribution (PSD) theory, primarily introduced to provide analytical and geometric description of performance sensitivity for robotic mechanisms.Result:Such novel method, named Specialized PSD, starts from the clarification of the sensitivity analysis problem by defining key parameters, i.e. Design Variables (DVs), Design Parameters (DPs) and Performance Functions (PFs). According to the PSD theory, PF sensitivity is expressed in terms of deviations of DVs and DPs and it is geometrically described by a hyperellipsoid in the n-dimensional space. Sensitivity indexes are then introduced to assess PF variation for different combinations of DVs and DPs deviations. Regression Analysis is adopted to provide the mathematical description of PFs so the PSD theory is finally specialized to be applied in a process sensitivity analysis. Injection molding of a plastic specimen is finally investigated to validate the proposed method.Discussion & Conclusion:This work specialize the PSD theory for manufacturing and technological processes, extending its original field of application thanks to a novel approach to the analytical expression of the PFs. Moreover, when 2 or 3 parameters are considered, sensitivity indexes are graphically represented through tolerance maps of colour, so the method can be easily adopt for integrated design, especially in the early stage of product and process development.

2011 - Design Of Simulation Experiments method for Injection Molding process optimization [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Gherardini, Francesco; Leali, Francesco; Pellicciari, Marcello; Vergnano, Alberto
abstract

Purpose:Many studies demonstrate that DOE, CAE and optimization tools can be very effective in product and process development, however their integration is still under investigation, hampering the applicability of such engineering methods in Industry. This paper presents a Design Of Simulation Experiments (DOSE) method, developed to determine the optimal set of process parameters (factors) for given product requirements (responses).Method:The method is developed performing an original selection and integration of engineering procedures and techniques based on DOE, CAE and multi-objective optimization, chosen according to the following criteria: ease of application, time-saving and use of reduced resources.Result:The developed method consists of two main steps: a first screening of factors based on a fractional DOE is followed by a systematic experimental plan based on the Response Surface Methodology (RSM), in which only key factors are investigated. A regression model is finally developed to describe the responses as functions of key factors and a multi-objective optimization is proposed to obtain optimal responses by tuning the process factors in their variability range. The DOSE method is finally validated on the design of an injection molded housing for a biomedical application. This thin shell component has dimension 45mmx37mmx16mm, wall thickness from 2mm to 0,5mm and is made of polyphenylsulfone (PPSU), a high performance thermoplastic.Discussion & Conclusion:The design method achieves good responses in terms of dimensional and geometrical requirements (e.g. warpage, shrinkage, sink marks), and improves the shell moldability. The DOSE method can be easily adopted in industrial product/process development to define the optimal process parameters for a better final quality of the products.

2011 - Effect of the boundary conditions on the vibrations of functionally graded shells [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Pellicano, Francesco; Strozzi, Matteo
abstract

In this paper, the effect of the boundary conditions on the nonlinear vibration of functionally graded circular cylindrical shells is analyzed. The Sanders-Koiter theory is applied to model the nonlinear dynamics of the system in the case of finite amplitude of vibration. The shell deformation is described in terms of longitudinal, circumferential and radial displacement fields. Numerical analyses are carried out in order to characterize the nonlinear response when the shell is subjected to an harmonic external load; different geometries and material distributions are considered. A convergence analysis is carried out in order to determine the correct number of the modes to be used; the role of the axisymmetric and asymmetric modes is carefully analyzed. The effect of the geometry on the nonlinear response is investigated; i.e. thickness and radius are varied; simply supported, clamped-clamped and free-free shells are considered. The effect of the constituent volume fractions and the configurations of the constituent materials on the natural frequencies and nonlinear response are studied.

2011 - Integrated Design of Robotic Workcells for High Quality Machining [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Leali, Francesco; Pellicciari, Marcello; Pini, Fabio; Vergnano, Alberto
abstract

Purpose:Robotic workcells provide high flexibility and reconfigurability, cost effectiveness and user friendly programming for many industrial applications but still lack in accuracy, so important fields of application such as mechanical machining are currently covered by very expensive and rigid systems (machining centers). The present work investigates the possibility to extend the use of industrial robots to perform high quality machining.Method:The proposed method is focused on the enhancement of robotic machining accuracy through an integrated design method, based on robotic process simulation and tailored design of mechanical apparatus and software modules for robot control and programming. Advanced techniques for machining strategy validation, automatic robot path generation, workcell calibration, robot code commissioning are concurrently adopted.Result:Integrated design tools are fully exploited to define the system behavior, to simulate the whole process, to propose alternative machining set-ups and quickly generate and test parametric programs. The design method is finally applied to design a robotic workcell family for grinding special austenitic manganese steel casts, characterized by severe working conditions as high tool wear, high cutting forces, high vibrations due to surface hardness and non-repetitive shape variations in geometry and features.Discussion & Conclusion:Experimental results demonstrate enhanced performance of robotic workcells and final quality, due to minimization of tool vibration, increasing of robot stiffness and higher manufacturing flexibility, thanks to the capability of adapting robot paths to workpieces.

2011 - Una metodologia innovativa di progettazione integrata per l'analisi e la caratterizzazione della sensitività delle performance [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Ansaloni, Matteo; Gherardini, Francesco; Leali, Francesco; Pellicciari, Marcello; Pini, Fabio; Vergnano, Alberto
abstract

Il presente lavoro è volto all’analisi e alla caratterizzazione della sensitività delle performance dei processi tecnologici. Le tradizionali tecniche di Robust Design utilizzate per l’analisi e l’ottimizzazione di processi e prodotti non sono state sviluppate con l’obiettivo dell’analisi della sensitività e, pertanto, presentano alcune carenze applicative. Il presente articolo propone un approccio alternativo che integra, estendendola ai processi tecnologici, la teoria della Performance Sensitivity Distribution (PSD), originariamente proposta nell’ambito dell’analisi dei meccanismi e, in particolare, nell’analisi dei manipolatori. Questo nuovo approccio, denominato specialized PSD, descrive il problema della sensitività delle performance attraverso la definizione di parametri chiave del progetto, suddivisi in Design Variables (DV) e Design Parameters (DP), e la formalizzazione di Performance Functions (PF). In accordo con la teoria PSD, la sensitività delle PF è espressa in funzione delle deviazioni dei DV e dei DP dai relativi valori nominali: essa è geometricamente descritta da un iperellissoide costruito nello spazio delle deviazioni, e valutata attraverso l’introduzione di indici di sensitività. La complessità nell’estensione dell’approccio PSD all’analisi dei processi tecnologici è legata alla necessità di ottenere la descrizione matematica delle PF in funzione dei parametri di progetto. Il metodo proposto, tuttavia, permette di superare tale problematica mediante un approccio legato all’analisi di regressione su dati sperimentali. Una strategia di Design Of Experiments viene applicata allo studio dei processi, così da campionare il comportamento delle PF in funzione della variazione dei parametri di progetto. Un caso di stampaggio ad iniezione di un provino è riportato al fine della validazione del metodo. In un’ottica di progettazione integrata, il metodo proposto si rivela utile per la caratterizzazione delle performance, specialmente nelle prime fasi di sviluppo di prodotto e processo.

2010 - Automazione e Verifica del Processo di Incollaggio in Linee Produttive di Telai per Vetture d’Alta Gamma [Abstract in Atti di Convegno]
Andrisano, Angelo Oreste; Baldini, Andrea; Bertocchi, Enrico; Giacopini, Matteo; Leali, Francesco; Mantovani, Sara; Pellicciari, Marcello; Pini, Fabio; Strozzi, Antonio; Vergnano, Alberto
abstract

Sommario. La produzione industriale dei telai auto ha registrato, nel tempo, una grande evoluzione progettuale e tecnologica, spinta dalla necessità di garantire alte prestazioni e comfort elevato, nel rispetto della sicurezza dei passeggeri e della sostenibilità ambientale. Le linee produttive di assemblaggio sono, soprattutto in segmenti di fascia alta, progettate per l‟esecuzione, su telai diversi, di articolati processi ibridi di giunzione, basati, cioè, sull‟adozione di tecnologie di saldatura, rivettatura ed incollaggio. I sistemi che ne derivano sono, dunque, caratterizzati da elevata complessità e richiedono lo sviluppo di dispositivi automatici dedicati e l‟impiego simultaneo di robot industriali e risorse umane. La soluzione di tali problematiche richiede l‟intervento sinergico di vari settori dell‟Ingegneria Meccanica poiché coinvolge competenze metallurgiche, progettuali e tecnologiche. A queste si aggiungono le competenze necessarie alla progettazione di sistemi produttivi ad alta flessibilità che, secondo la visione proposta dagli autori, siano caratterizzati da elevata modularità strutturale ed operativa, parametricità e standardizzazione delle soluzioni progettuali e dei componenti, autonomia esecutiva, e che assicurino una rapida ed efficace riconfigurazione, garantendo, parallelamente, l‟alto livello qualitativo dei prodotti ed il completo controllo dei processi realizzati. Il presente articolo tratta lo sviluppo e la progettazione integrata del modulo robotizzato di incollaggio per linee di assemblaggio ibride di telai in alluminio, svolta in collaborazione con il gruppo ALCOA e con SIR SpA. Successivamente vengono presentati i risultati sperimentali ottenuti dalla verifica strutturale a lap shear e peeling di alcuni provini ricavati da assemblati del tunnel, effettuata secondo normative interne Ferrari SpA. Abstract. In the last years, industrial production of automotive chassis has gained a great evolution in design and technology, spurred by the need to achieve high performance and comfort, while ensuring both the safety of passengers and the environmental sustainability. State-of-the-art assembly lines, especially in top class segments, are designed to employ hybrid junctions on different chassis. Such complex process is based on the simultaneous adoption of welding, riveting and adhesive bonding technologies. The production systems design engages the development of specific automated devices and the cooperation of industrial robots and human resources. The solution of these issues involves the synergic action of various sectors of mechanical engineering, as metallurgy, design, and mechanical technology. Design of high flexibility production systems is another important issue: according to the viewpoint proposed by the authors, such systems are characterized by high structural and operational modularity, by parametric and standard design of solutions and components, by executive autonomy and rapid reconfiguration capability, thus simultaneously ensuring high quality of products and the complete control of processes. The present paper deals with the development and integrated design of the robotic adhesive bonding module in hybrid assembly lines for aluminum chassis, carried out in collaboration with the ALCOA group and SIR SpA. Experimental results are also presented, that refer to lap shear and peeling tests, carried out on specimens extracted from the chassis tunnel, according to Ferrari SpA internal standards.

2010 - Metodi di progettazione integrata di sistemi automatici adattivi [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Faretra, Marco; Gherardini, Francesco; Guerra, Alessandro; Leali, Francesco; Pellicciari, Marcello; Pini, Fabio; Vergnano, Alberto
abstract

Le prestazioni dei moderni sistemi automatici di assemblaggio derivano sempre più dall’integrazione di apparati meccanici con attuatori programmabili, sensori, sistemi di elaborazione dati e complesse logiche di controllo. La disponibilità di tali tecnologie permette di affrontare nuove sfide tecniche ma comporta una rivoluzione nel modo di concepire meccanismi e macchine. I tradizionali modelli di progettazione, orientati alla definizione per funzioni degli apparati e strutturati con l’intervento sequenziale delle diverse aree di conoscenza dell’ingegneria, non permettono di sfruttare tutte le potenzialità delle diverse tecnologie coinvolte e di progettare comportamenti adattivi. È dunque necessario costruire nuovi metodi di progettazione che consentano di produrre sistemi in grado di interagire con l’ambiente circostante, di adattare autonomamente il proprio comportamento e di massimizzare e/o ottimizzare le prestazioni. Il presente lavoro descrive un metodo per la progettazione integrata di sistemi automatici adattivi attraverso la modellazione e la prototipazione virtuale dei comportamenti. Il metodo segue un approccio sistematico e considera, a diversi livelli di dettaglio, l’evoluzione dinamica dei comportamenti sia tempo-continua che guidata da eventi discreti. L’integrazione delle conoscenze e delle tecnologie in un ambiente virtuale può portare all’evoluzione in nuovi principi risolutivi, alla creazione delle basi di conoscenza su cui sono basate le logiche adattive, ad avanzate strategie di sensorizzazione ed attuazione, all’ottimizzazione complessiva del sistema ed alla compressione dei tempi di sviluppo. Questa memoria riporta infine l’applicazione del metodo proposto nella progettazione di un sistema di assemblaggio automatico.

2010 - Virtual prototype based method for hybrid reconfigurable assembly systems design in top class automotive industry [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Leali, Francesco; Pellicciari, Marcello; Pini, Fabio; Vergnano, Alberto
abstract

Changeability is mandatory for top class automotive industry to cope with new product development paradigms and demanding market. Hybrid Reconfigurable Assembly Systems (H-RMSs) address a customized flexibility on product families, given by coexistence or cooperation of human workers and robots. Key-issues for the effective design of harmonized hybrid assembly systems are: modularity; integrability of humans, machines and components; customization; convertibility; diagnosability of systems; and smart utilization of robots and skilled workers. Human and robotic tasks need a clear definition and allocation, for an effective enhancing of human dexterity and cognitive proactivity, together with robotic accuracy and strength. Virtual prototyping plays a strategic role within the H-RMS design optimization process, to explore different assembly setting and to interactively train operators but represents a challenging task and needs advanced tools. The present paper deals with the development of a Virtual Prototype based method for H-RMS design in top class automotive industry.

2009 - Artificial vision method for automatic robot code generation in robotic manufacturing for automotive industry [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Leali, Francesco; Pellicciari, Marcello; Vergnano, Alberto
abstract

Manufacturing operations performed by robotic systems in Mechanical Industry needprecision to achieve an high final quality on workpieces which are, generally,characterized by complex geometrical profiles, variable within small batch lots. Eachrobot movement is composed of hundreds of spatial points, calculated with respect toconstrains imposed by tool dimension and envelope. Consequently robot programmingrepresents a time consuming task, to be realized interrupting the system production. Anovel approach to the problem is discussed in the present paper. Artificial visiontechniques are applied to on-line reconstruct the workpiece profile and to calculate atailored tool path. A high resolution vision system moved by a preprogrammed roboticarm catches the workpiece. Images are elaborated and assembled to obtain a single highresolution view of the workpiece and to match the manufacturing features. Tool pathsare finally defined coherently with tool characteristics. The robot code is automaticallygenerated and transmit to the robot controller, ready to be executed. For an effectiveimplementation in Industry of the method developed, a graphic-based softwareapplication was realized. A tailored graphical interface was designed to guide the finaluser along the process and guarantee the best usability. State of the art hardware, visionlibraries and last generate anthropomorphic industrial robots were adopted to test themethod while an high performance engine head was chosen as benchmark forexperimental validation

2009 - Engineering Method for Adaptive Manufacturing System Design [Articolo su rivista]
Andrisano, Angelo Oreste; Leali, Francesco; Pellicciari, Marcello; Vergnano, Alberto
abstract

Adaptive manufacturing systems achieve intelligence and adaptation capabilities through the close interaction between mechanics, electronics, control and software engineering. Mechatronic design of intelligent manufacturing behaviours is of paramount importance for the final performances of complex systems and requires deep integration between mechanical and control engineering. Virtual Commissioning environments offer engineers new opportunities for the design of complex intelligent behaviours and for the enhancement of the performance of adaptive manufacturing systems. This paper discloses a systematic design method focused on interdisciplinary behavioural simulations: Virtual Commissioning tools are used to virtually explore new solution spaces for an effective mechatronic optimization. The results, achieved by applying the method in reengineering a module of an automotive sensor manufacturing line, are finally presented.

2009 - Graphical control interface for dextrous hands in industrial robotics [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Leali, Francesco; Pellicciari, Marcello; Vergnano, Alberto
abstract

Industrial research in robotics is particularly focused in enhancing system flexibility andreconfigurability. Grippers and manipulation end effectors play a key role to achievesuch goals, evolving to complex mechatronic systems, whose capabilities appear as notyet fully exploited. Recent research studies investigate new generations of dextrous endeffectors, designed to emulate human hand architecture and behavior. Such systemsopen the way for innovative solutions in Industry but their use is still limited to researchlab or to service robotics. Despite that, dextrous hands seem to be mature enough to beused in industrial applications, usually more demanding in robustness and lifetimereliability within adverse environments. Thanks to the high number of degrees offreedom and to the advanced control electronics, dextrous hands could accomplishadvanced handling tasks as adaptive compliant assembly and could adopt intelligentbehaviors, sensitive to the operating scenario. To fully exploit the potentialities ofdexterous hands in Industry is necessary to develop specific interfaces to connect suchcomplex devices with anthropomorphic industrial robots. Dextrous hands programmingand control appear as key tasks in order to fully exploit their potentialities andperformances. The present work proposes a novel method, based on graphicalprogramming techniques, to create a clear and usable interface to introduce dextroushands in industrial robotics. The experimental results, obtained connecting a SDH-2(Schunk Dextrous Hand, Schunk GmbH & Co. KG) and a FANUC LR Mate 200iC robot, arefinally discussed.

2009 - Il Tecnopolo Regionale per la Meccanica della Provincia di Modena: strutture, organizzazione, obiettivi [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Leali, Francesco; Pellicciari, Marcello; Vergnano, Alberto
abstract

Il presente articolo descrive la struttura, l’organizzazione e gli obiettivi di ricerca industriale del Tecnopolo regionale per la meccanica della provincia di Modena, contestualizzandolo rispetto al sistema produttivo del territorio. Il Tecnopolo ha come principale finalità quella di rispondere efficacemente ai bisogni delle imprese attraverso la creazione di organi di gestione e di supervisione scientifica che consentano la condivisione delle problematiche di ricerca, la costituzione di gruppi di ricerca trasversali e la definizione di politiche comuni a più enti di ricerca ed il trasferimento tecnologico dall’Accademia all’Industria. Il Tecnopolo modenese persegue, dunque, obiettivi di ricerca che, senza perdere la propria natura scientifica, possano essere condivisi dalle realtà aziendali più intraprendenti ed attente allo sviluppo tecnologico, soprattutto da chi opera nei maggiori settori industriali dell’Emilia Romagna connessi con l’Alta Meccanica: automotive, meccatronica, micro e nanotecnologie, energetica, ICT, design industriale, biomedicale, ceramica. I maggiori ambiti d’azione riguardano la simulazione, la verifica e la simulazione di prodotti e processi industriali, a partire dai sistemi di trasmissione a ingranaggi fino ai motori ad alte prestazioni, dai componenti meccanici strutturali più raffinati ai processi di produzione robotizzati e automatizzati.

2009 - Metodi di visione artificiale in sistemi robotizzati per il settore automotive [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Pellicciari, Marcello; Leali, Francesco; Vergnano, Alberto; Pini, Fabio; Gherardini, Francesco; Faretra, Marco
abstract

Il presente articolo descrive un nuovo approccio di programmazione e guida robot capace di generare, automaticamente e in tempo reale, percorsi di lavorazione ottimizzati in funzione di singoli componenti. Tale metodo è stato validato sperimentalmente applicandolo al processo di sbavatura di una piccola serie di testate per motori a elevate prestazioni. Infatti i moderni sistemi robotizzati di produzione sono spesso impiegati in operazioni complesse su componenti che sono caratterizzati, specialmente nel settore automotive, da profili e geometrie multiformi, che variano radicalmente da un lotto produttivo a un altro e, nel caso di tecnologie che generano bave e difetti superficiali, anche all’interno di uno stesso lotto. Per ottenere l’elevata qualità richiesta dall’Industria, tali sistemi, molto ripetibili ma intrinsecamente poco precisi rispetto ai tradizionali centri CNC, richiedono la definizione di percorsi utensile composti da migliaia di punti e da articolati programmi robot, all’interno dei quali i parametri cinematici, dinamici e di lavoro vengono continuamente modificati. L’impiego di sistemi di guida robot a elevate prestazioni assume, dunque, un’importanza strategica nel processo di generazione del percorso utensile, specialmente all’interno di settori industriali nei quali è ancora largamente diffusa la pratica di generare manualmente, in autoapprendimento, le istruzioni di movimento dei robot e nei quali l’impiego di sistemi di programmazione offline CAD/CAE stenta ancora a trovare vasta applicazione. Di conseguenza, la fase di programmazione robot e il tempo a essa dedicato, rappresenta un aspetto che incide profondamente sulla reale flessibilità e produttività dei sistemi robotizzati.

2009 - Metodi e strumenti di prototipazione virtuale per il progetto e l’ottimizzazione di macchine e sistemi di automazione industriale [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Leali, Francesco; Pellicciari, Marcello; Faretra, Marco; Gherardini, Francesco; Pini, Fabio; Vergnano, Alberto
abstract

A seguito della drastica evoluzione del mercato il settore industriale della meccanica ha mostrato l’esigenza di interagire in modo sempre più efficace con il mondo della ricerca e dell’Università, con l’obiettivo primario di sviluppare prodotti e processi produttivi innovativi. Tale andamento si è concretizzato, da parte delle aziende, nell’orientamento al raggiungimento di un’elevata qualità durante tutto il ciclo di sviluppo prodotto/processo e nell’interesse alla (ri)-qualificazione dei propri addetti o all’acquisizione di nuove figure professioni di alto profilo. L’Università di Modena e Reggio Emilia, in collaborazione con altri Atenei emiliani e con la Regione Emilia Romagna ha operato con continuità, negli ultimi anni, per favorire e sostenere un efficace processo di trasferimento tecnologico dal mondo della ricerca verso il tessuto imprenditoriale. La costituzione del laboratorio SIMECH per la progettazione integrata e la simulazione, oggi confluito nella più ampia aggregazione INTERMECH, e la presentazione del progetto di creazione di un Polo Tecnologico per la Meccanica Avanzata e la Motoristica, con sede presso il Dipartimento di Ingegneria Meccanica e Civile di Modena, hanno costituito le tappe fondamentali di un’aggregazione orientata al consolidamento delle attività di ricerca di interesse del mondo produttivo e al loro rapido trasferimento industriale. Il presente articolo presenta due delle attività svolte negli ambiti del progetto, con particolare riferimento allo sviluppo di metodi e strumenti di prototipazione virtuale e all’ottimizzazione di macchine e sistemi per l’automazione industriale. Il primo caso presentato tratta lo sviluppo e la progettazione di una linea robotizzata di lavorazione ed assemblaggio di telai automobilistici in alluminio, svolta in collaborazione con SIR S.p.A., azienda leader nell’integrazione di sistemi industriali robotizzati, ed Alcoa Inc., importante gruppo specializzato nella produzione di telai, per conto di un’importante azienda automobilistica modenese. La seconda attività di trasferimento descrive il lavoro svolto in collaborazione con Dassault Systèms Italia nello sviluppo di metodi di progettazione di sistemi meccatronici adattativi di lavorazione basati su tecniche avanzate di Virtual Commissioning, attualmente implementati all’interno di alcuni importanti gruppi aziendali del territorio nazionale.

2009 - Progettazione orientata alla robustezza di prodotto e processo [Articolo su rivista]
Andrisano, Angelo Oreste; Gherardini, Francesco; Pini, Fabio; Vergnano, Alberto
abstract

Progettare componenti per automobili di lusso ad elevate prestazioni implica la definizione di traguardi funzionali e prestazionali da perseguire con techiche orientate alla qualità totale del prodotto finale, valutata anche in termini di contenuti emozionali, senza tralasciare comunque la riduzione dei costi e l'ottimizzazione dei tempi e delle risorse aziendali.La multidisciplinarietà e la complessità del problema rende quindi necessario un approccio strutturato basato su metodi di ingegneria simultanea e sul coinvolgimento dei fornitori nelle attività di progettazione, almeno nelle fasi più critiche di definizione della catena di valore. Attraverso un approccio integrato basato sulla modellazione CAD/CAM e sull'adozione di tecniche SPC (Statistical Process Control) e FMEA (Failure Mode and Effect Analysis), si è giunti al miglioramento generale del meccanismo e al conseguente incremento della qualità di tutta la famiglia di torrette cambio ad esso correlata, soprattutto in termini di qualità percepita dall'utente finale. I risultati ottenuti hanno, inoltre, portato allo sviluppo di una soluzione specifica finalizzata al miglioramento della robustezza del prodotto e del processo produttivo sull'intero ciclo di vita.

2008 - Mechatronic design of adaptive manufacturing systems [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Leali, Francesco; Pellicciari, Marcello; Vergnano, Alberto
abstract

2008 - Metodi di progettazione integrata e simulazione di sottogruppi di macchine alternative [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Barbanti, Giovanni; Pellicciari, Marcello; Leali, Francesco; Faretra, Marco; Gherardini, Francesco; Pini, Fabio; Vergnano, Alberto
abstract

I moderni criteri di progettazione dei sistemi meccanici, spesso finalizzati a fronteggiare le elevate prestazioni delle macchine e la drastica riduzione dei costi e dei tempi di consegna, richiedono di considerare ed ottimizzare in tempi ridotti numerosi parametri funzionali all’interno di scenari operativi eterogenei, in cui gli aspetti strutturali, cinematici e dinamici non possono essere valutati indipendentemente. I metodi tradizionali di progettazione spesso affrontano questi aspetti in modo necessariamente approssimato e richiedono onerosi test su prototipi reali per la verifica e la messa a punto del sistema. La prototipazione virtuale utilizza diversi strumenti CAE (Computer Aided Engineering) per realizzare modelli di sistemi meccanici reali che tuttavia vengono ancora prevalentemente utilizzati come strumenti di verifica di sistemi già definiti con tecniche tradizionali. Nel presente lavoro si discute un metodo di progettazione che, pur fondandosi su solide basi di conoscenza tradizionali, permette di identificare con certezza i principali parametri progettuali su cui intervenire ed utilizza estesamente la prototipazione virtuale come strumento di progettazione. Si presenta inoltre la sua applicazione nella progettazione di un sistema per la sperimentazione di una macchina alternativa

2008 - Metodi e strumenti PLM per la progettazione integrata di sistemi meccatronici [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Gherardini, Francesco; Leali, Francesco; Pellicciari, Marcello; Pini, Fabio; Vergnano, Alberto
abstract

Lo sviluppo di prodotti e sistemi meccatronici implica attività multidisciplinari e concorrenti da svolgere con metodi e strumenti di sviluppo molto diversi tra loro. L’integrazione di tali attività è fondamentale per il raggiungimento degli obiettivi prestazionali ed il successo del prodotto e rappresenta uno dei maggiori problemi da risolvere a livello progettuale. Il trasferimento di conoscenze ed informazioni tra aree di competenza intrinsecamente diverse, da sincronizzare nei relativi processi di sviluppo, risulta il maggior limite da superare ed è spesso la causa principale di ritardi o di prestazioni non completamente ottimizzate. Nuovi ambienti di simulazione comportamentale sull’intero ciclo di vita permettono finalmente di disporre degli strumenti e tecnologie abilitanti per trasferire le reciproche conoscenze tra i diversi gruppi di lavoro e giungere in tempi ridotti ad una reale ottimizzazione dei sistemi. Gli autori hanno effettuato diverse esperienze nella progettazione di sistemi meccatronici nel campo della robotica ed automazione ed hanno ideato specifici metodi e strategie di impiego degli strumenti della piattaforma Delmia, che hanno permesso di sfruttarne le potenzialità raggiungendo vantaggi valutati e comparati rispetto allo stato dell’arte.

2007 - 3D MID Integrated Design for New Product Development in Advanced Mechatronics [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Leali, Francesco; Pellicciari, Marcello; Pini, Fabio; Vergnano, Alberto
abstract

TPMS (Tire Pressure Monitoring Systems) are required to provide high efficiency RF transmission, to be realized using components with reduced overall dimensions. Then, the design of TPMS antennas is a critical task, to be performed with accurate optimization activities based on intensive experimental development. In this field, MID technology can provide a strong strategic advantage since it can reduce the overall dimensions integrating different components and functionalities and, at the same time, permitting seamless fast prototyping, and customization, of different variants of the antenna layout. In this paper it will be presented the integrated design and development (and the methods adopted) of a novel TPMS RF transmission unit, realized with LDS technology. In this activity, the design engineers used synergically several software tools to simulate and evaluate concurrently all the different problems involved. The component geometries were designed in order to fulfil the structural and mechanical requirements, the molds were concurrently developed and the injection moulding process accurately simulated to validate the final shapes. At the same time, different design variants of the antenna were developed with intensive numerical simulations. A prototype mould was then quickly realized and specimens produced where, with LDS technology, the antennas lay out variants were manufactured. Several experimental testing on such prototypes were then performed in order to tune the 3D electromagnetic field simulation parameters (and be then able to perform further optimization studies on virtual prototypes). Finally a fast optimization of the antennas components was realized and the manufacturing processes tuned. Such activities were jointly realized by DIMEC, Mechanical Engineering Department of the University of Modena researchers and Kontek Comatel R&D team

2007 - Automatic CAD-FEM procedure for gear analysis [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Bertacchi, Gabriele; Faggioni, Marcello
abstract

The interest on gear noise problems is increased remarkably in the last ten years. Variable mesh stiffness, impacts and backlash affect the transmission error, main source of in desiderate noise. The control of gear geometry, as well as the influence of contact ratio and loads, plays a key role in this effort. In the present paper, a CAD-FEM methodology for spur gears is proposed. This tool provides the exact gear geometry, the relative position and the FEM mesh for a wide family of spur gears. The software generates the gear profiles from parameters describing the ‘‘user rack’’. Particular attention is paid on simulating the enveloping process in the presence of protuberance and semi-topping in the cutting tool. The shaving manufacturing process is also taken into account. A parametric approach is developed to generate the FEM mesh according to the teeth profile geometry. Finally a test case is presented to prove the accuracy of the static analysis

2007 - Design methods for intelligent robotic deburring cells [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Leali, Francesco; Pellicciari, Marcello; Pini, Fabio; Vergnano, Alberto
abstract

Cast iron parts deburring is a complicate and always more demanding task: it requires to realize an accurate 3D surface contouring, to be performed with an adequate tool stiffness and cutting power. At present time, cast iron parts production is characterized by small size lots of components which often have very different geometries. Moreover, it is easy to find that every single part of the same lot is quite different from the others, due to different burrs, varying in size and geometrical shape. Then cast iron parts deburring is a hard task which requires extreme flexibility. For this reason industrial robots seem to be the ideal solution; unfortunately the long time needed for programming the robot and the manufacturing cycle, together with the parts variability and components range reduces heavily the overall manufacturing efficiency and profitability. For this reason, novel intelligent manufacturing methods must be realized and implemented. In the present paper it will be presented the integrated design and development of a new generation of cast iron parts robotic intelligent deburring and the engineering design methods adopted to achieve such results. The deburring of cast iron parts is performed by anthropomorphous robots with the integrated aid of vision systems, custom designed adaptive compliance tools and virtual prototypes of the cell itself, where it is possible to simulate all the different manufacturing tasks and automatically generate the code for the robotic cell numeric control. Using synergically all these tools and technologies it has been finally possible to overcome all the limits and problem of the state of the art. In fact, through the creation of a functional virtual prototype of the cell architecture, linked to different design and simulation environments, all the different operating scenarios can be simulated and all the information and data needed to solve the specific problems obtained. Exploiting synergically the performances of the vision system and the digital prototype it is possible to let the robot to interpret the operating scenario and to adopt proper intelligent behaviours, while, the realization of custom designed adaptive tools improves the cell overall performances. Furthermore, a design method for iron cast robotic deburring will be described.

2007 - Dynamic optimization of spur gears [Relazione in Atti di Convegno]
Faggioni, Marcello; Pellicano, Francesco; Bertacchi, Gabriele; Andrisano, Angelo Oreste
abstract

2007 - Dynamic optimization of spur gears [Relazione in Atti di Convegno]
Faggioni, Marcello; Pellicano, Francesco; Andrisano, Angelo Oreste; Bertacchi, Gabriele
abstract

This paper presents a global optimization method able to find gear profile modifications that minimize vibrations. A non linear dynamic model is used to study the vibrational behavior; the dynamic model is validated using data available in literature. The optimization method takes into account the influence of torque levels both on the static and the dynamic response. Therefore, two different objective functions are considered; the first one is based on static analysis and the second one is based on the dynamic behavior of a lumped mass system. The procedure can find the optimal profile modification that reduce the vibrations over a wide range of operating conditions. In order to reduce the computational cost, a Random-Simplex optimization algorithm is developed; the optimum reliability is also estimated using a Monte Carlo simulation. The approach shows good performances both for the computational efficiency and the reliability of results.

2007 - Engineering Methods for Enhanced Intelligence in Robofacturing (Robotic Manufacturing) Applications [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

2007 - Gli insegnamenti di Ettore Funaioli nella mia attività presso l’Ateneo di Modena e Reggio Emilia [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

Vengono riassunte le più recenti attività accademiche dell’autore trasferitosi nell’Ateneo di Modena il 1.11.1990. Sono richiamate le iniziative intraprese nelle due Facoltà di Ingegneria di Modena e di Reggio Emilia: Attivazione del Dipartimento di Ingegneria Meccanica e Civile, attivazione dei Corsi di Laurea e di Master, della Scuola di Dottorato, il contributo alla realizzazione della nuova sede della Facoltà di Ingegneria di Modena, la docenza nella Accademia Militare, le ricerche nell’ambito delle Rete Regionale dell’Alta Tecnologia Meccanica, il coordinamento dei laboratori SIMECH (Simulazione Meccanica) e LAPIS (LAboratorio di Progettazione Integrata e Simulazione) nell’ambito del Distretto regionale HIMECH ed in sinergia con le aziende meccaniche del territorio.

2007 - Product and Process Robustness Enhancement for a Top Class Automotive Gearshift Tower [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Leali, Francesco; Pellicciari, Marcello; Pini, Fabio; Vergnano, Alberto
abstract

Automotive engineering is a challenging task for modern engineers. Requirements and technical specifications are more and more demanding, especially in relation with high performance and luxury class. Such aspects involve both functional and emotional aspects and pursues total quality, equally in product and manufacturing process. Moreover, a structured concurrent and co-design based engineering approach, involving the whole value chain, is required while cost need to be reduced, time saved and human and industrial resources spared. The present paper deals with the design and manufacturing optimization of manual selection and clutch mechanism in a gearbox tower, realized to provide top class cars. Gearbox tower is the mechanical interface between drivers and engine transmission system in automotive applications. It has the primary function to permit driver selecting and shifting gears during vehicle march, to optimize engine running. Furthermore such mechanism has a central role in enhancing the overall market perception of the product and in transmitting to the customers good feelings about driving quality and car reliability, according to top class targets. Robust design approach was primary followed, focusing on the continuous improvement of products and processes [1], [2]. Different existing solution for gearbox tower were firstly analyzed, performing a concurrent engineering analysis of each mechanical component from functional, productive and assembly points of view. Technical and technological aspects were discussed and compared through FMEA (Failure Mode and Effects Analysis) while an integrated CAD/CAM analysis (Pro/ENGINEER Wildfire 2.0) were carried out to optimize 5-axes CNC manufacturing. SPC (Statistical Process Control) were concurrently performed to maximize efficiency and process consistency. A novel gearbox tower was finally designed. Three-dimensional parametric virtual prototype was realized and evaluated into its kinetic-dynamic characteristics within SolidWorks 2006 (Figure 1) and COSMOSMotion environments, in order to test the impact of different Computer Aided Tools inside a holonic and collaborative supply chain. The method developed and the following studies leaded to the general enhancing of the gearbox project, especially in its more critic aspects. The gearbox tower family was optimized in its technical aspects and engineering performances respect to the state of the art. Moreover it was improved in terms of total quality perception from final users. Results obtained leaded to the develop of specific solutions focused in make the product and the related process more robust in the overall life cycle.

2006 - Digital engineering methods for enhanced flexibility of robofacturing (robotic manufacturing) applications [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Leali, Francesco; Pellicciari, Marcello
abstract

A digital engineering method was developed to enhance robotic cell flexibility in industrial manufacturing applications. Computer Aided 3D parametric modeling, behavioural simulation, offline programming were integrated into the design process to define and generate robotic cell virtual prototypes. Resulting information and data were primarily used during design and engineering stages for optimizing the cell layout and for assuring best performances in cycle time reduction and manufacturing path accuracy. Then digital models were simplified and fit within customizable virtual environment, developed for allowing final users to quick re-configure the robotic cell and re-program robots without any specific competence on robotics. The robotic deburring and finishing manufacturing of crankshaft for V8 and V12 high-performance engines was investigated through the method developed. A cell prototype was finally realized by R&D engineers from SIR S.p.A. (www.sir-mo.it) and researchers from the Department of Mechanical and Civil Engineering, sharing competences, experiences and technical resources within the Integrated Design and Simulation of Robotic Systems Lab, a novel Industry/University hybrid structure. Such digital engineering method applied to a robotic manufacturing problem leaded to the theorization of a “Design for Robotic Manufacturing (“Robofacturing”)” approach, finally called. Robotic cell flexibility was enhanced providing final users a digital engineering service for manufacturing cell re-configuration and robot re-programming.

2006 - Innovative Research Model for the Integrated Design and Simulation of Robotic Cells in Italian University-Industry Partnership [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

2006 - Innovative Research Model for the Integrated Design and Simulation of Robotic Cells in an Italian University - Industry Partnership [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; G., Bertacchi; S., Bertini; P., Bonaretti; Leali, Francesco; G., Moretti; Pellicciari, Marcello; Pini, Fabio
abstract

Many investigations and surveys on collaboration between Research and Industry in R&D activities have largely demonstrated western industries need to hold the globalization blast innovating design methods, developing new products/engineering processes and investing in advanced technologies. Such approach often requests the support of government institutions and results particularly demanding for Small and Medium-sized Enterprises which often suffer a lack of capital, time and human resources to invest in R&D activities. At the state of the art University and Research Institutes play a really important role to support enterprises in such challenging tasks. The present paper describes the experience realized at the Department of Mechanical and Civil Engineering of Modena to promote high-quality interdisciplinary research on design methodologies and robotics and to actually realize the tech-transfer toward the local industrial texture. Some existing laboratories were structured as a network into an High Tech District (HI-MECH), to offer specific competences on integrated design and simulation (SIMECH net-lab), while new hybrid structures (both academic and industrial) were founded to allow R&D engineers sharing experiences, knowledge and instruments with students and researchers on specific themes (La.P.I.S. - Integrated Design and Robotic Cell Simulation Lab). Working in such operating scenario, successful experiences were realized, carried out to design and prototype a new generation of robotic cells deeply based on virtual modelling and offline programming.

2006 - Integrated Design and Development of MID Antenna for TMPS Applications [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; M., Crippa; Leali, Francesco; Pellicciari, Marcello
abstract

2005 - Design of Iron Cast Deburring Robotic Cells with Simulation and Offline Programming Tools [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Leali, Francesco; Pellicciari, Marcello
abstract

The design of last generation anthropomorphous robots manufacturing cells is a challenging activity, to be developed accurately in a fast and effective way due to the strong requirements to satisfy in terms of time to market, overall performances and the total costs of the final application. During the design stages, different types of graphical and technical representations are needed to exalt and communicate the design intent and to evaluate the effects of every design variant on the final operating performances. For this reasons the choice of the tools to adopt, and a correct methodology for an integrated use, for this purpose is strategically important and delicate. On one side the design tools must be focused to point out all the multidisciplinary effects involved, especially those concerning the strong interrelation of the mechanical apparatus solutions with the electrical and electronics systems, while on the other side they must be absolutely integrated and easy to use. In the present paper it will be explained the choices effected on the graphical representation and design tools, and the design method created for an effective integrated use, in the design and development of iron casts deburring anthropomorphous robots manufacturing cells, performed during real experiences, developed together by DIMEC University researchers and SIR, an important system integrator enterprise. Actually, state of the art 3D parametric CAD and behavioural simulation design tools confirmed to be powerful but the adoption of anthropomorphous robot simulation and offline programming tools proved to be fundamental for the final validation of every design variant. The need to enrich classical mechanical design representation, static and fixed for single configurations, with animations where robot movements and the motion control can be effectively communicated and evaluated, was then solved and proved to give an important feedback to the design engineers, who acquired more consciousness on the real performances achievable. Furthermore, the availability of multimedia movies, was finally appreciated even to interact with the final user for training purposes.

2005 - Integrated CAM FEM procedure to create bidimensional spur gear model [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Bertacchi, Gabriele; Bonori, Giorgio
abstract

The interest into gear noise problems is increased remarkably in the last ten years. Variable mesh stiffness, impacts and backlash affect the transmission error, main source of not desiderate noise. The control of gear geometry, as well as the influence of contact ratio and loads, plays a key role in this effort. In the present paper a new methodology for the realization of an integrated CAD-FEM bidimensional model for spur gears is proposed. This CAD-FEM tool provides exact gear geometry, relative positioning and the automatic mesh for a wide family of spur gears. The code generates the gear profiles based on the parameters describing the cutting tool. Particular attention is paid on simulating the enveloping process when protuberance and semi topping exist. The shaving manufacturing process is also taken into account. A parametric routine is used to automatically generate the mesh according to the teeth profiles geometry. Finally some case study are presented to validate the model and demonstrate how static analysis can be performed accurately in a very simple way

2005 - Integrated Design of a Robotic Cell for Lasts Roughing. [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Leali, Francesco; Pellicciari, Marcello
abstract

A computer simulation based methodology was elaborated for the integrated design and development of a footwear lasts roughing robotic cell, developed by DIMeC (University of Modena and Reggio Emilia, Italy) researchers and the design engineers of SIR S.P.A., an italian robot system integrator market-leader. The integration of different design and simulation software tools leads to a time and cost-saving procedure to be used in the design of high-performance robotic manufacturing cells, with increased machining quality, flexibility, low set-up time and ease of re-configurability. A Concurrent Engineering approach was followed throughout all the stages of the robotic cell development, while behavioral simulation and off-line programming performed on the definitive model allowed to close the Computer Integrated design process loop.

2005 - Modellazione bidimensionale CAD FEM di coppie d’ingranaggi cilindrici [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Bertacchi, Gabriele; Bonori, Giorgio; Faggioni, Marcello; Pellicano, Francesco; G., Amedei; P., Montanari; S., Seghedoni
abstract

2005 - Parametric design methodologies for the feasibility study of internal grinding spindles [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Barbanti, Giovanni; Leali, Francesco; Pellicciari, Marcello
abstract

Nowadays design engineers need to apply, and to develop, innovative methodologies to achieve goals like superior product performances, cost containment, time-to-market reduction, satisfying also Mass Customization paradigms. Moreover, technical teams must focus on logic processes rationalization and information flow transparency, looking for cooperation with different company departments and aiming at best operating flexibility. A modern industrial project involves complex tasks connected to quick development, product management simplicity and adaptability to the changeable boundary conditions. Increasing software availability, together with calculation, graphic visualisation and modeling hardware devices escalation, is not enough to guarantee optimal results. In fact, these tools need to be integrated into a customized methodology process, defined according to a systematic approach. Moreover, different problems have to be faced up in a concurrent engineering logic, through an accurate parameterization of the main design aspects and a deep analysis of the characteristic variables. The present work deals with an accurate feasibility study concerning a grinding spindles family for internal gears. The problem, complex both from technical feasibility and industrial production side, involved the identification of creative and innovative design solutions. In particular, to achieve coherent results, it was necessary to develop accurate calculations, performed on a spreadsheet, later used to rule completely the CAD geometries. Then, the integrated adoption of three-dimensional CAD modeling and numerical tools have been permitted the design team to obtain all the data and informations necessary to evaluate the best design variants and to correctly design the product family, defining sizing and products configuration. The graphical design has been supported by the power of automated dimensioning, permitting the design engineers to focus on the product architecture. Thus, a product knowledge base has been easily realized, and used to rule model configuration and to optimize different design choices. Furthermore, such knowledge base may be used for future works, enabling a strong time compression of other projects. Finally, the spreadsheet linked to the CAD resulted a natural interface to other software tools, permitting to synchronize different design activities involved in the new product development process.

2004 - "Reverse Engineering: potenzialità e applicazioni", Atti del Convegno sulla R.E., 2004, Università degli Studi di Modena e Reggio Emilia, DIMeC, Modena, 25 maggio 2003 [Curatela]
Andrisano, Angelo Oreste; Gatto, Andrea
abstract

2004 - Dynamics of gear meshing: stiffness evaluation and vibration [Relazione in Atti di Convegno]
Bonori, Giorgio; Andrisano, Angelo Oreste; Pellicano, Francesco
abstract

In the present paper we are concerned with vibration problems in gears mesh. A 2D model is developed,which is able to create the teeth proﬁle for the contact proﬁle and the tooth ﬁllet for a very large classes of 2Dgears. A single degree of freedom model is developed using lumped masses. The stiffness of the gears is cal-culated using the ﬁnite element code (MSC MARC) from different meshing position of two identical gears,using contact elements for the teeth interaction. This approach allows to evaluate accurately the variableglobal stiffness, which depends on the gear position, materials and teeth geometry. The variable stiffnessgives rise to a parametric excitation, which is periodic; therefore it gives rise to a Mathieu type instability. AFourier series of the variable stiffness is obtained from the numerical data evaluated with the FEM model.The dynamic model is analyzed by means of direct simulations and ontinuation techniques; the latter one areable to follow periodic responses and detect instabilities and dynamic bifurcations.

2004 - Metodologie di indagine sul comportamento dinamico di ingranaggi [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Pellicano, Francesco; Bonori, Giorgio; G., Amedei; P., Montanari; C., Seghedoni
abstract

2004 - On tire monitoring systems temperature compensation [Relazione in Atti di Convegno]
Barbanti, G; Pellicciari, Marcello; Andrisano, Angelo Oreste
abstract

Direct type [1] Tire Monitoring Systems supervise tire internal inflating pressure. The authors previously proved that Tire Monitoring must be focused on the tire (i.e.: vehicle) dynamic behaviour [2]: the real aim of the supervising action. In this case, even the external absolute pressure must be taken into account. NHTSA studies showed improper warnings must be avoided in order to keep the driver confidence with the system; internal temperature decrease is the Tire Monitoring Systems' main cause of improper warnings. A new approach for optimal Tire Monitoring Systems temperature compensation related to external environmental temperature, able to avoid improper warnings, will be presented. Copyright © 2004 SAE International.

2004 - Reverse engineering methodologies applied to complex virtual models development in the medical field [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Bassoli, Elena; Gatto, Andrea; Leali, Francesco; Pellicciari, Marcello
abstract

Negli ultimi anni si è assistito, nell’ambito della ricerca applicata, ad un progressivo processo di trasferimento delle pratiche e delle metodologie tipiche dell’ingegneria industriale in ambito medicale, ed alla costituzione di gruppi di lavoro eterogenei, formati sia da personale medico che tecnico-ingegneristico. In particolare, sembra essersi affermata la tendenza alla definizione di modelli ed ambienti virtuali, ad esempio, per la pianificazione pre-chirurgica degli interventi e per la comprensione delle problematiche ad essa inerenti, e sembra progressivamente essersi diffusa la consapevolezza che sfruttando l’elevato contenuto informativo delle rappresentazioni grafiche tridimensionali è possibile favorire il superamento delle normali barriere culturali e comunicative, soprattutto tra medici e pazienti o tra insegnanti e studenti e creare gruppi di lavoro in grado di comunicare più facilmente e, quindi di raggiungere risultati migliori in tempi ridotti. Il presente lavoro di ricerca, realizzato grazie alla forte sinergia tra il gruppo di Disegno e Metodi dell’Ingegneria Industriale e il gruppo di Tecnologia e Sistemi di Lavorazione del Dipartimento di Ingegneria Meccanica e Civile di Modena, riguarda la definizione di una procedura che, attraverso l’uso combinato di differenti tecnologie di reverse engineering e di strumenti software dedicati alla generazione ed alla modellazione delle superfici, consenta di ottenere un prototipo virtuale complesso di un oggetto fisico. Il benchmark adottato, fornito dal Dipartimento di Neuroscienze, Testa-Collo, Riabilitazione di Modena è costituito dall’arcata mascellare di un modello artigianale scomponibile, formato da una base in resina e legno e da 14 denti in resina completamente estraibili, che, inserito in un apposito articolatore insieme alla corrispondente arcata mandibolare, viene attualmente utilizzato per descrivere la normale occlusione in ambito didattico. Il metodo sviluppato, basato sull’uso di strumenti hardware e software di costo medio basso, ha consentito di definire una procedura rapida e facilmente implementabile anche da parte di personale non tecnico, facilitando l’accostamento alle potenzialità offerte dalle tecnologie assistite da calcolatore per la realizzazione di prototipi virtuali.

2004 - Stiffness Evaluation and Vibration in a Tractor Gear [Relazione in Atti di Convegno]
Bonori, Giorgio; Andrisano, Angelo Oreste; Pellicano, Francesco
abstract

The problem of gear noise in vehicles has been intensively studied in the past; however, recently the interest about this problem grew because of great restrictions in the laws regarding noise level and the increase of international competition. One of the most important vibration and noise sources is transmission error that excites the gearbox as a dynamic system, the gearbox surfaces, and connected components; the external box radiates noise. However, the current understanding of gear vibration remains incomplete, even though there is general agreement about the nature of the phenomenon. Vibrations are due to several sources: torsion resonance, impulsive or cyclic fluctuations in drive torque, gear mesh transmission error, local component vibration responses and fluctuations in the output torque demand. The concept of a vibrating system made of two gears is generally modeled through two wheels linked by the teeth mesh stiffness. In its simplest form, this model can simulate the classical linear resonance, i.e. the resonant frequency of the system. However, more complex phenomena such as parametric instabilities can be an important source of noise. In the present paper vibration problems in the gears of an industrial vehicle are investigated through the use of perturbation technique. A suitable software has been developed to generate the gear profiles in order to evaluate global mesh stiffness using finite element analysis.

2003 - On the integrated design and development of a high speed cartesian robot [Relazione in Atti di Convegno]
Pellicciari, Marcello; G., Barbanti; Andrisano, Angelo Oreste
abstract

Nowadays, high speed cartesian robots are widely used as system integration of machine tools, commonly preferred to other robot architecture because of their high accuracy, reduced overall dimensions, and especially cost effectiveness and versatility. The increasing cycle speed and structural complexity of last generation machining processes imposes the design engineers to strongly improve the manipulators performances, and new requirements must absolutely be satisfied, for example the need to adopt proper safety systems and to implement different standard components to harmonically integrate with the existing machine tools. Since cartesian architecture robots are basically well developed industrial products, often already optimized during past design experiences, it becomes quite hard to find new solution and to further optimize the existing ones to realize superior performances and cost reduction. Then it becomes necessary to adopt a proper approach, on one hand able to follow the design engineers team intent during the fast evolving conceptual design stage and to help them to recognize, in a fast and effective way, the best solution to develop, on the other hand to optimize the design variant adopted. All the future users needs and design requirements must then absolutely be formalized, organized and correctly connected, in order to easily identify the task to perform, with the related priority, and their effects on all the different functionalities. In order to realize an effective robot configuration all the possible solution must be checked, as well as the choice of the motion apparatus type or the spatial placement of all the different components. Finally, once the decision of the detailed architecture took place, an intensive optimization activity becomes necessary. It is clear that a real performance improvement can be achieved only in the first design stage, where can be found design solution that can avoid future problems and simplify the structure. To really test the effectiveness of the choice adopted, a complete virtual prototype, strictly connected with the 3D CAD model, has been developed and all the possible solution verified, and compared, trough the numerical simulations, aimed to evaluate the robot different design variant final dynamical performance. The interaction between the CAD model and the virtual prototype imposed the use of third party spreadsheet, able to modify the main parameters and to easily process the simulation data results. In this paper the methodology and the solutions adopted for the design of a novel model of High Speed Cartesian Robot will be described.

2003 - Tire monitoring systems design: A novel approach [Relazione in Atti di Convegno]
Barbanti, G; Pellicciari, Marcello; Andrisano, Angelo Oreste
abstract

Monitoring tires working conditions has proved to be very important for best aircraft ground performances. Thus, to prevent safety risks it is necessary to recognize all the parameters really affecting tires dynamic behaviour and study a proper supervising strategy, able to guarantee an easy and effective security action. It will be proved that measuring tire internal gas pressure (even with internal temperature compensation, then measuring the total internal gas mass) it is not possible to monitor accurately the tire dynamic behaviour. In this paper a new approach to design a new generation of tires monitoring system will be presented. Copyright © 2003 SAE International.

2003 - “La funzione trasversale della Reverse Engineering e il suo Ruolo Strategico”, Atti del I e II Convegno sulla R.E., 2002 e 2003, Università degli Studi di Modena e Reggio Emilia, DIMeC, Modena, 12 giugno 2003 [Curatela]
Andrisano, Angelo Oreste; Gatto, Andrea
abstract

2002 - A Contribution to the Analysis, Characterization and Improvement of Surface Properties, Generated by DMLS for Rapid Prototyping [Relazione in Atti di Convegno]
M., Vezzani; Andrisano, Angelo Oreste; R., Groppetti; P., Onesti; A., Rossi; A., Scrivani
abstract

2002 - On a FRF based experimental sub-structuring technique for linear vibrating systems [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Catellani, Giulia; Pellicano, Francesco
abstract

2001 - A City Car Innovation Process: Priorities Analysis [Relazione in Atti di Convegno]
M., Giordani; P., Stanzani; A., Freddi; Andrisano, Angelo Oreste
abstract

2001 - Caratterizzazione superficiale di rivestimenti innovativi a base di titanio e di apatite fluorurata per impianti ortopedici [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Groppetti, Roberto
abstract

2001 - Design and Development of a Multi-Axis Hip Joint Simulator using an Integrated approach [Relazione in Atti di Convegno]
M., Pellicciari; Barbanti, Giovanni; Andrisano, Angelo Oreste
abstract

2001 - Functional Requirements for a Modern Cad System [Relazione in Atti di Convegno]
M., Pellicciari; Barbanti, Giovanni; Andrisano, Angelo Oreste
abstract

2000 - Design and Development of a Multi-axis Hip Joint Simulator [Relazione in Atti di Convegno]
M., Pellicciari; Barbanti, Giovanni; Andrisano, Angelo Oreste
abstract

2000 - Simulazione di un transelevatore per l'alimentazione di una macchina rettificatrice con palettizzazione del prodotto [Relazione in Atti di Convegno]
Marzi, Raol; F., Zanichelli; Andrisano, Angelo Oreste
abstract

2000 - Sistemi di sorveglianza dei pneumatici. Analisi preliminare: tematiche generali e logiche di sviluppo [Relazione in Atti di Convegno]
Barbanti, Giovanni; M., Pellicciari; Andrisano, Angelo Oreste; J. M., Borel
abstract

2000 - Tyres Monitoring Systems [Relazione in Atti di Convegno]
M., Pellicciari; Barbanti, Giovanni; Andrisano, Angelo Oreste
abstract

1999 - A Methodology for the Integration in Machine Tool Components Design and Development [Relazione in Atti di Convegno]
M., Pellicciari; Barbanti, Giovanni; Andrisano, Angelo Oreste
abstract

1999 - Caratterizzazione superficiale di rivestimenti innovativi a base di titanio e apatite fluorurata per impianti ortopedici [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Groppetti, Roberto
abstract

1999 - Surface Modeling and Three Dimensional Micro Geometrical Analysis of Biomedical Vacuum Plasma-Sprayed Coatings for Orthopaedic Implants [Relazione in Atti di Convegno]
A., Basili; P., Bracali; Andrisano, Angelo Oreste; Groppetti, Roberto
abstract

1998 - Structural Analisys of Prosthetic Ceramics Components [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Bissi, Piero
abstract

1997 - Criteri di progettazione di biocomponenti per protesi d’anca: coppe acetabolari in allumina [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Bissi, Piero
abstract

1997 - Design of Ceramic Acetabular Cup [Relazione in Atti di Convegno]
Bissi, Piero; Andrisano, Angelo Oreste
abstract

1997 - Studio del meccanismo di trasmissione del carico attraverso lo strato di cemento osseo (PMMA) di una artoprotesi totale d'anca [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; S., Gheduzzi
abstract

1996 - Comportamento strutturale e tribologico di componenti in materiale ceramico per protesi d’anca [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

1996 - Discussion on the design of a hip joint simulator [Articolo su rivista]
M., Viceconti; G., Cavallotti; Andrisano, Angelo Oreste; A., Toni
abstract

Hip joint simulators were developed for predicting, bu attempting to duplicate in vitro physiological loads and motion, the wear rate that total hip replacements are likely to show in vivo. From a theoretical point of view, loading and motion cycles of hip joints could be closely reproduced by three rotation actuators and three force actuators. However existing devices have been designed assuming that some of these degrees of freedom are negligible, in order to reduce the complexity of the equipment. The present study singles out some preliminary indication on the design choices regarding the spatial configuration of loading and motion actuators. The aim is to define theoretically a simplified simulator but still to apply the most physiologically realistic loading cycle to the specimen. Copyright

1996 - Studio estensimetrico di un femore dopo l’inserimento di una protesi totale d’anca [Capitolo/Saggio]
Andrisano, Angelo Oreste; M., Viceconti
abstract

1995 - Structural evaluation of ceramic femoral heads: effect of taper friction, support conditions and trunnion compliance [Articolo su rivista]
Dragoni, Eugenio; Andrisano, Angelo Oreste
abstract

The outcome of a nonlinear finite element stress analysis of ceramic heads for artificial hip joints is presented. The analysis mainly covers the influence of taper friction, support conditions and trunnion modulus of elasticity on the hoop stress distribution at the surface of the head bore. The paper quantifies how much the maximum tensile stress decreases with increasing frictional coefficient, with stiffening of the support and with stiffening of the trunnion material. An appreciable rise of the maximum tensile upon unloading of the head is also shown for the case of cup support. The computational results are found in close correspondence with photoelastic measurements of taper pressures and encourage the use, for preliminary design purposes, of an approximate theoretical model retrieved from the literature.

1995 - The Influence of Geometric Tolerance, Dimensional Tolerance and Taper Fit on Contact Area and Contact Pressure in Ceramic Hip Joint [Relazione in Atti di Convegno]
Bissi, Piero; Andrisano, Angelo Oreste
abstract

1994 - Automatic fracture reduction with a computer-controlled external fixator [Articolo su rivista]
M., Viceconti; Andrisano, Angelo Oreste; A., Toni; A., Giunti
abstract

The reduction of fractures by means of an Ilizarov's fixator is obtained by successively shortening or lengthening the rods. This entails that all reduction operations of the fracture stumps be performed with a series of empirical attempts, requiring great experience and manual dexterity in the surgeon. Moreover this process involves a long exposure of both physician and patient to potentially harmful radiation due to the continuous checking of the intermediate positions on the X-ray image intensifier. In order to overcome these limits a new device has been conceived, based on the application of three stepper-motors on three rods. Its basic principle is functionally very similar to Ilizarov's prototype. The relative motions between the two frames are carried out by controlling the three actuators with a computer, which processes the number of required steps on the basis of an algorithm, starting from a few inputs supplied by the surgeon. This article illustrates the functional kinematic study necessary for the complete automation of the reduction process. Also considered is the complex problem of the reduction trajectory definition, intended as a sequence of configurations of partial correction, obtained by formalizing in geometrical terms the empirical criterial followed by the orthopaedic surgeon in reducing fractures. Such a sequence is intended to be a suggestion for the surgeon who can visualize and possibly interact with the system to determine a trajectory harmless for the soft tissues surrounding the bone.

1993 - Analysis of the Forces Acting in a Hip Joint Simulator [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

1993 - Comportamento strutturale e tribologico di componenti in materiale ceramico per protesi d’anca [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

1992 - A Computer Model to Simulate the Behaviour of a New Robotic External Fixator [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

1992 - Comportamento strutturale e tribologico di componenti in materiale ceramico per protesi d’anca [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

1992 - Stresses in Universal Ceramic Heads for Total Hip Replacement: Effect of Stem Elastic Modulus and Frictional Coefficient [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; F., Bertuzzi; Dragoni, Eugenio
abstract

1991 - Comportamento strutturale e tribologico di componenti in materiale ceramico per protesi d’anca [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

1991 - Influenza dei fenomeni viscoelastici nella misura sperimentale di deformazione di segmenti ossei [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

1991 - The Photoelastic Stress Analysis of Hip Prosthetic Ceramic Heads [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

1990 - A Photoelastic analysis of ceramic heads for total hip replacements [Articolo su rivista]
Andrisano, Angelo Oreste; V., Ciavatti; Dragoni, Eugenio; Strozzi, Antonio
abstract

The main stress features in a hip joint replacement are studied photoelastically. In particular, the load transfer mechanism and the outcome of pressure peaks are examined and interpreted. An improved solution which permits a reduction of the stress level to be achieved is also investigated photoelastically. Some joint design directives are included.

1990 - A Strain Gauge Study on Alterations of the Proximal Femur Strain Pattern Induced by a Cementless Hip Arthoplasty [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

1990 - Axisymmetric mechanical analysis of ceramic heads for total hip replacement [Articolo su rivista]
Andrisano, Angelo Oreste; Dragoni, Eugenio; Strozzi, Antonio
abstract

An axisymmetric, mechanical analysis of conical press-fit ceramic heads is performed. The head strength and its fracture modes are assessed experimentally. The stress field is examined by finite element, strain gauge and photoelastic methods. An alternative head design, characterized by a cylindrical engagement with the stem, is analysed with the same techniques and its merits are explored.

1990 - Comportamento strutturale e tribologico di componenti in materiale ceramico per protesi d’anca [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

1990 - The Steindler method in the treatment of paralytic elbow flexion [Articolo su rivista]
Andrisano, A; Porcellini, G; Stilli, S; Libri, R
abstract

Based on an average follow-up of 8.6 years, the authors analyse the functional results obtained in 16 patients submitted to Steindler flexoroplasty of the elbow between 1975 and 1986. The absence of active flexion of the elbow produces a severe deficit in the upper limb even when there is good function of the shoulder and hand. Since 1921, the year in which Steindler published a report on his surgical method, numerous surgical methods have been described for the treatment of paralytic elbow. Clark (1946), Merle d'Aubigné et al. (1956), Brook and Sendon (1959) propose transposing pectoralis major by suturing it to the tendon of the biceps muscle. Le Coeur (1953) instead isolates pectoralis minor and then transposes it on the biceps tendon. Bunnel (1951) describes two methods: the first consists in isolating the sternocleidomastoid by lengthening it with the fascia lata and inserting it into the tendon of the biceps, the second proposes anteriorly transposing the distal triceps tendon. Hovnanian (1956) and Zancolli and Mitré (1973) transpose the latissimus dorsi by inserting it distally on the distal biceps tendon, while Axer et al. (1973) transpose part of the same muscle. It is the purpose of this study to report the experience obtained using the Steindler method in 22 patients affected with paralysis of the flexor muscles of the elbow.

1990 - Un modello a più gradi di libertà per l'analisi dinamica di trasmissioni con croce di malta [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Dalpiaz, G.
abstract

1989 - Analisi fotoelastica di una protesi d’anca in ceramica. Parte I: Metodologia [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; V., Ciavatti; Dragoni, Eugenio; Strozzi, Antonio
abstract

1989 - Analisi fotoelastica di una protesi d’anca in ceramica. Parte II: Risultati [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; V., Ciavatti; Dragoni, Eugenio; Strozzi, Antonio
abstract

1989 - Post-injective quadriceps contracture [Articolo su rivista]
Valdiserri, L; Andrisano, A; Manfrini, M; Mazzetti, Maura; Porcellini, G
abstract

After reviewing the literature, the authors report 19 patients affected with post-injective contracture of the quadriceps muscle observed by them between 1971 and 1983. Clinical evaluation, indications for surgery and the results of surgery are discussed.

1989 - Sul progetto di un dispositivo di osteosintesi esterna [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

1988 - AN EXPERIMENTAL INVESTIGATION ON THE ROTATING JOURNAL SURFACE TEMPERATURE DISTRIBUTION IN A FULL CIRCULAR BEARING [Articolo su rivista]
Andrisano, Angelo Oreste
abstract

1988 - Analisi meccanica di testine in ceramica per protesi d’anca [Articolo su rivista]
Andrisano, Angelo Oreste; Dragoni, Eugenio; Strozzi, Antonio
abstract

Il lavoro è rivolto all'analisi meccanica di testine di ceramica comunemente impiegate in protesi d'anca ed alla definizione di una nuova geometria della testina. La ricerca si articola in quattro parti. La prima parte riguarda l'analisi geometrica (errori di forma) delle superfici interessate al collegamento testina-stelo. La seconda parte è dedicata alla determinazione sperimentale dei carichi e dei modi di rottura delle testine. Nella terza parte viene svolta l'analisi delle sollecitazioni nelle testine, condotta con metodi sperimentali (fotoelasticità) e numerici (elemento finito). La quarta parte propone un disegno alternativo delle testine per ottenere una resistenza maggiore rispetto a quelle esistenti.

1988 - Effetti dei giochi e della rigidezza sul comportamento dinamico di una trasmissione con Croce di Malta [Working paper]
Andrisano, Angelo Oreste; G., Dal Piaz
abstract

1988 - Mechanical Analisys of Ceramic Total Hip Replacements Heads [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Dragoni, Eugenio; Strozzi, Antonio
abstract

1988 - Photoelastic Analisys of Ceramic Heads for Total Hip Replacements [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

1988 - Sul comportamento dinamico di una trasmissione con Croce di Malta [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; G., Dal Piaz
abstract

1988 - Un modello di una trasmissione con Croce di Malta e sua verifica sperimentale [Working paper]
Andrisano, Angelo Oreste; G., Dal Piaz
abstract

1987 - Analisi sperimentale di testine in ceramica per protesi d’anca [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; V., Ciavatti; Strozzi, Antonio
abstract

1987 - Effetti del Processo di Sbarbatura sulla Eccentricità di Dentatura di Ingranaggi Cilindrici ad Evolvente [Articolo su rivista]
Andrisano, Angelo Oreste
abstract

1987 - Shaving Effects on Eccentrically Cut Gears [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

1986 - Relation entre les erreurs de denture et le diagramme de l’engrenement sur un seul flanc [Relazione in Atti di Convegno]
G., Bianco; Andrisano, Angelo Oreste; U., Meneghetti
abstract

1986 - Relazione fra gli Errori di Dentatura e il Diagramma dell'Ingranometro Monofianco [Articolo su rivista]
G., Bianco; Andrisano, Angelo Oreste; U., Meneghetti
abstract

1986 - Rilievo sperimentale della temperatura superficiale di un perno portante fluidodinamico [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste
abstract

1986 - Soluzione numerica di problemi di lubrificazione termoelastoidrodinamica [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; Strozzi, Antonio
abstract

1985 - Sulla misura della temperatura superficiale di un perno portante [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; E., Lanzoni
abstract

1984 - Effetti della eccentricita’ di dentatura sul rapporto di trasmissione di ingranaggi cilindrici [Articolo su rivista]
Andrisano, Angelo Oreste
abstract

1982 - Sull’ applicazione di cuscinetti pneumostatici a lamelle per mandrini di rettificatrici [Articolo su rivista]
Andrisano, Angelo Oreste; Barbanti, Giovanni
abstract

1981 - Analisi sperimentale del comportamento dinamico del cuscinetto reggispinta poroso pneumatico [Working paper]
Andrisano, Angelo Oreste; A., Maggiore; V., Parenti Castelli
abstract

1981 - ESERCITAZIONI DI MACCHINE UTENSILI [Monografia/Trattato scientifico]
Andrisano, Angelo Oreste; W., Grilli
abstract

1981 - Experimental Analysis of the Dynamic Behaviour of Externally Pressurized Porous Thrust Bearings [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; A., Maggiore; V., Parenti Castelli
abstract

1981 - Stato di tensione nelle piastre delle catene a rulli: Studio preliminare [Working paper]
Andrisano, Angelo Oreste
abstract

1979 - On the Geometry of Cylindrical Cams [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; A., Maggiore
abstract

1978 - Theoretical and Experimental Analysis of an Externally Pressurized Porus Gas Thrust Bearings [Articolo su rivista]
Andrisano, Angelo Oreste; A., Maggiore
abstract

This paper presents a fast modified three-dimensional flow model deduced from the Darcy equation and the modified Reynolds equation. The finite element method is used to discretize both equations so that only one nonlinear final set of equations is to be solved for finding the pressures in the gas film and porous matrix instead of two nonlinear sets of equations in the literature. In general, the time required by the present analysis on VAX 3100 is only about 30% of the time required by the classical three-dimensional flow model. For a circular porous thrust pad, the results from the present model agree well with the experimental result. It may also be observed that the analytical analysis and the one-directional flow model are not precise for the large values of R/H and small value of the film thickness h.

1977 - Studio teorico sperimentale del cuscinetto reggispinta poroso pneumostatico [Working paper]
Andrisano, Angelo Oreste; A., Maggiore
abstract

1977 - Sulla utilizzazione di cuscinetti porosi pneumostatici per un elettromandrino di una rettificatrice per interni [Working paper]
Andrisano, Angelo Oreste
abstract

1976 - Calcolo semplificato e studio sperimentale dei cuscinetti porosi portanti pneumostatici [Relazione in Atti di Convegno]
Andrisano, Angelo Oreste; U., Meneghetti
abstract

1976 - I cuscinetti portanti pneumostatici a bussola porosa. Parte I: Stato delle conoscenze [Working paper]
Andrisano, Angelo Oreste
abstract

1976 - I cuscinetti portanti pneumostatici a bussola porosa. Parte II: Studio sperimentale [Working paper]
Andrisano, Angelo Oreste
abstract

1974 - Contributo allo studio dei cuscinetti porosi pneumostatici: effetti delle imperfezioni di forma del guscio poroso [Relazione in Atti di Convegno]
U., Meneghetti; Andrisano, Angelo Oreste
abstract

Università degli studi di Modena e Reggio Emilia

Pubblicazioni