Current Topics in Finite Element Approaches Applied to Mechanical and Mechatronic Systems

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DIPARTIMENTO DI MECCANICA Università di Udine CORSO DI ECCELLENZA /

to Mechanical and Mechatronic Systems Proposed within the frame of

Mircea Gheorghe Munteanu Professor Università degli Studi di Udine

Naman Recho Professor ERMESS/ EPF Ecoles d'ingenieurs, Sceaux, France

1 DIPARTIMENTO DI MECCANICA Università di Udine CORSO DI ECCELLENZA / EXCELLENCE COURSE Current Topics in Finite Element Approaches Applied to Mechanical and Mechatronic Systems Proposed within the frame of teaching staff exchange program 2011 Prof. Mircea Gheorghe Munteanu Professor Università degli Studi di Udine Former Professor at University of Brasov, Romania Prof. Naman Recho Professor ERMESS/ EPF Ecoles d'ingenieurs, Sceaux, France LaMI, University Blaise Pascal, Clermont II, France (ERASMUS Partner) Course Coordinator: Prof. Eugenio Brusa Dipartimento di Meccanica Dottorato di Ricerca in Meccanica Coordinatore del Dottorato: Prof. Luigi Garibaldi ItalySection Suggested and indexed by ASME Italy Section

2 Index of contents and preliminary program Location Course shall be held at Dipartimento di Meccanica, Sala Riunioni /meeting room III piano / floor on June Preliminary program June 1 st, 2011: to E. Brusa Introduction: Systems with multiple coupling effects in mechanical and mechatronic engineering, multi-field approach, nonlinearities. Main goals of design and challenging issues for numerical methods. Electro-thermo-mechanical coupling in industrial projects. PART ONE Multiple coupling effects and nonlinearity of complex systems June 9, 2011: 9.00 to M. Gh- Munteanu FEM analysis of nonlinear system: Geometric nonlinearities and nonlinear loading, large displacement in beamlike systems, analytical models, application of FEM, development of alternate approaches. The SFET finite element for large displacement and non conservative nonlinear loading conditions. June 10, 2011: 9.00 to M. Gh- Munteanu FEM analysis of multiple coupled system: Compliant mechanisms, microelectromechanical systems as an example of multiple coupling. FEM investigations for static and dynamic analyses. Interaction among thermal, electrical and mechanical phenomena. June 16, 2011: to E. Brusa Experimental validation of FEM models: Multi-physic systems at macro and micro scale and related experimental investigations. Goals, tools, model updating and validation. Industrial examples of FEM model validation and concurrent design based on experimental and numerical activities. PART TWO Fracture Mechanics and advanced use of Finite Element Method June 16, 2011: to E. Brusa Introduction: Towards detailed prediction of structural reliability, damage mechanics and safety of multi-physic systems with multiple coupling. June 21, 2011: 9.00 to N. Recho Classical approaches to Fracture Mechanics: Crack process, singular fields in Continuum Mechanics, significance of the Stress Field near a Local Effect, Stress, Strain and Displacement Fields near a Crack in Elastic Media, and in Elastic- Plastic Media. Crack Extension Criteria: TS transition criterion, Bifurcation angle criterion, Initial propagation criterion. June 22, 2011: 9.00 to N. Recho Crack Propagation Law: crack propagation law definition, propagation and crack extension of a fatigue mixed-mode crack. Finite Element Modelization of the Stress Singular Field Close to the Crack Tip: Local Methods («Core Element», «Enriched Element»), Energetic Methods (Method of Finite Variation,

3 Contour-Integrals, Other Integrals/Decoupling of Fracture Modes), Non-linear Behaviour (power behaviour law, multi-linear behaviour law, relation between COD and J-integral) Special Finite Elements for cracked structures: Study of a Finite Element Program using Local Methods. Calculation of J-integral in Mixed Mode Fracture. June 23, 2011: to N. Recho - Various Meshing Techniques and Re-meshing during Crack Propagation: X-FEM Method (exented Finite Element Modelling), Crack Box Technique. Other methods. Some Applications: Prediction of crack propagation: Procedures and resolution techniques, application to various media (multi-material problems, cracks in composites, elastic-plastic materials, damaged materials), propagation and bifurcation of a mixed-mode crack in static and fatigue domains, Future work: BIE-Method, The Notch Stress Intensity approach to predict fatigue strength of welded joints. June 28, 2011: to E. Brusa - Written test for credits attribution. Room location Dip. Meccanica, Sala Riunioni Scale ingresso Corso Einaudi: III piano (floor); comporre il 6900 per farsi aprire (deal 6900 to call prof. Brusa)

About coordinator Eugenio Brusa Associato, ING-IND/14 Prog. Meccanica e Costruzione di macchine Dipartimento di Meccanica Politecnico di Torino tel. 090 6900 fax. 090 6999 e-mail: eugenio.

4 About coordinator Eugenio Brusa Associato, ING-IND/14 Prog. Meccanica e Costruzione di macchine Dipartimento di Meccanica Politecnico di Torino tel fax eugenio.brusa@polito.it Aeronautical Engineer (M.Sc.), Politecnico di Torino, 1993 Ph.D. Machine Design, February 1998 to October Assistant professor of Machine Design, Dept. Mechanics, Politecnico di Torino, head of Laboratory for spinning test of rotors. November 2001 to October University of Udine (Italy), Dept. Electrical, Management and Mechanical Engineering, head of Mechatronic Section of Laboratory for Ubiquitous and Pervasive Technologies and Technical Director of Master in Project Management. Since November Associate Professor of Machine Design. On 2010 he was positively evaluated by a national Committee to appoint full professor. Instructor of Mechanics of Materials, Numerical Methods in Eng. and Mechanical Design. He is author of more than 130 scientific papers, some contributions to books on Structural Mechatronics and two patents. Coauthor of Microsystem Mechanical Design, Springer, 2006 and MEMS: Technology, Fabrication Processes and Applications, Nova Science, He belongs Laboratory of Microsystems design and characterization and Laboratory of Railways systems dynamics and construction, within Dept. Mechanics. He was awarded by the Italian Society for Stress Analysis, on 1999, by Young Scientist Award Capocaccia. He is currently Vice Chair of ASME Italy section. International collaborations: University of Illinois at Chicago ( ) (practice hours within courses held at Politecnico di Torino), Visiting professor at TU Delft (2000), TU Helsinki (2002), TU Muenchen (2009), Université Blaise Pascal, Clermont Ferrand (2005), Ecole EPF, Sceaux (2007 & 2010), CNRS (2007), Institute Marie Curie, Paris (2010); associate coordinator of First European School on Mechatronics and Microsystems, Universiteit Carolo-Wilhelmina am Braunschweig (2006).

5 About speakers Mircea Gh. Munteanu, MEng, Ph.D. Ordinario, ING-IND/14 Progettazione Meccanica e costruzione di macchine Università degli Studi di Udine Dipartimento di Ingegneria Elettrica, Gestionale e Meccanica (DIEGM) Via delle Scienze, Udine (UD) - Italy tel fax mircea.munteanu@uniud.it Education Ph.D., Applied Mechanics, Transylvania University of Brasov, Romania, July Computer Aided Engineering, Polytechnic University, Bucharest, Romania, May-August, M.Eng., Mechanical Engineering, Transylvania University of Brasov, Romania, July Professional Experience: Università degli Studi di Udine, DIEGM, 2007 present. Transylvania University of Brasov, Romania, IAR Aeronautics, Brasov Romanian, R&D Engineer, National Research and Design Institute for Motor Vehicles, Brasov, Romania, Sept Aug International collaborations (visiting professor): University of Victoria (UVIC), Victoria BC, Canada, HAMK, Finland, 2006 and Università degli Studi di Udine, Italy, IFMA (Institut Français de Mécanique Avancée), Clermont-Ferrand, France, , McGill University, Montreal, Canada, ENSAM (Ecole Nationale Supérieure d Arts et Métiers), Paris, France, 1999, ICGEB (International Centre for Genetic Engineering and Biotechnology), Trieste, Italy, SINCROTRONE, Trieste, Italia, ICGEB, Trieste, Italy, SINCROTRONE, Trieste, Italia, European program PECO ERBCIPDCT940090, Queen Mary and Westfield College, London, UK, European program TEMPUS JEP 3543, Politecnico di Torino, Italy; INSA, Lyon, France, European program TEMPUS JEP 2934, Politecnico di Torino, Italy, Publications and awards: More than150 scientific publications and several textbooks "Alberto Castigliano" Medal awarded by Politectico di Torino, Italy for excellence in research.

Professor Naman Recho ERMESS/ EPF-Ecoles d'ingenieurs, Sceaux and LaMI, University Blaise Pascal, Clermont II-France E-mail: naman.recho@epf.

6 Professor Naman Recho ERMESS/ EPF-Ecoles d'ingenieurs, Sceaux and LaMI, University Blaise Pascal, Clermont II-France Naman Recho is Professor at the University Blaise Pascal in Clermont Ferrand, France abd head of ERMESS- Research laboratory (Equipe de Recherche en Mécanique et Securité des Structures) at EPF Engineering school in Sceaux, France. He has worked extensively with conceptual and applied aspects of fracture mechanics, with welded offshore structures and reliability analysis of cracked structures. He also teaches at Centre des Hautes Etudes de la Construction, Paris, and is guest Professor at Hefei University of Technology in China. Professor Naman Recho was educated at the French University of Pierre and Marie Curie in Paris. He graduated in this university as Doctor Engineer in 1980 and "Docteur d'etat Es-Sciences Physiques" in He is full Professor since He was delegate (Délégation CNRS) at National Centre of Scientific Research in Paris from 2005 to 2007 and wrote three textbooks within Fracture Mechanics and Fatigue Analysis. In the recent 10 years, he directed several theses dealing with fracture mechanics and fatigue design of welded joints and participated into several research programs with industries. Naman RECHO ERMESS/ EPF-Ecoles d Ingénieurs, Sceaux and LaMI, University Blaise Pascal, Clermont II, France. naman.recho@epf.fr recho@moniut.univ-bpclermont.fr

Suggested references: Tom Lassen and Naman Recho Fatigue life analyses of welded structures ISTE, London, 2006; ISBN 1-905209-54-1 (for contents of Prof.

2 in MEMS: Technology, Fabrication Processes and Applications, Edited by Britt Ekwall and Mikkel Cronquist, Nova Science Publishers,, Hauppauge NY, USA; 2010,

7 Suggested references: Tom Lassen and Naman Recho Fatigue life analyses of welded structures ISTE, London, 2006; ISBN (for contents of Prof. Recho s lectures) Eugenio Brusa Design for reliability of micromechatronic structural systems Chap. 2 in MEMS: Technology, Fabrication Processes and Applications, Edited by Britt Ekwall and Mikkel Cronquist, Nova Science Publishers,, Hauppauge NY, USA; 2010, ISBN: (examples of multiple coupling and related design issues) ATTENDANCE Participants are kindly requested of sending an to eugenio.brusa@polito.it to announce their attendance preferably within May,

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