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Shenzen, December 8, 2011

Roberval Laboratory Joint Research Unit UTC-CNRS Mechanics, Acoustics & Materials Science http://www.utc.fr/lrm. Shenzen, December 8, 2011. Commitment : Research for Excellence in Mechanical and Acoustical Design. Develop innovating methods in computational mechanics

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Shenzen, December 8, 2011

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  1. Roberval LaboratoryJoint Research Unit UTC-CNRSMechanics, Acoustics & Materials Sciencehttp://www.utc.fr/lrm Shenzen, December 8, 2011

  2. Commitment : Research for Excellence in Mechanical and Acoustical Design Develop innovating methods in computational mechanics in vibration and acoustics in materials and surface characterization in integrated systems engineering Applications Strength of materials and structures Vibration control and noise reduction Design and optimization of mechanical systems Protocols and tools for reliable and robust mechanical design

  3. Organization DirectorJean-Marc Roelandt Deputy Director Piotr Breitkopf Executive Assistant C. Soubiran ACMO JM Gherbezza PhD students, publications B. Duch Executive committee Director Deputy Director Team Heads Industrial relationships M.A. Hamdi Logistics M. Guigon Laboratoiry Council General Assembly Collegium INSIS-UTC C. Vayssade HPC center B. Hagège Experimental facilities G. Marichal Seminars A. Ouahsine Research Teams E1 ComputationalMechanics E2 Acoustics &Vibrations E3 Materials& Surface Science A. Rassineux M. Ben Tahar G. Moulin

  4. Research Teams • Computational Mechanics (Alain Rassineux), 21 staff, 32 PhD • Diffuse approximation (meshing/meshless, digital image correlation) • Multidisciplinary Design Optimization, Reduced Order Modeling, Reliability • Strong discontinuity approach in damage mechanics • Design of mechanical systems • Acoustics and Vibrations (Mabrouk Ben Tahar), 10 staff, 11 PhD • vibro-acoustic signal analysis and processing • Galbrun equation for modeling acoustic phenomena in presence of flow • Characterization of poro-acoustic materials • Materials and surfaces (Gérard Moulin) : 27 staff, 48 PhD • Characterization of surfaces under stress and temperature • Surface morphology and mechanical properties • Woven and knitted composite materials, bio-sourced composites

  5. International Collaborations University of Bath Imperial College of London ISVR Southampton UT and AGH, Cracow UT of Gliwice, University of Wroclaw DTU Universities of Québec TU Braunschweig ULB, Brussels KU Leuven Bologna Politecnico de Torino NPU, Xi’an University of Tucson Sfax, Monastir Annaba, Béchar, EP Algiers University of Vellore Univ. Parana New South Wales University, Sydney USACH, Santiago

  6. Teaching Activities Department of Mechanical Engineering (J. Favergeon) Vibrations and Acoustics (JM Ville) Materials and technological innovation (M. Guigon) Reliability and industrial quality (N. Boudaoud) Industrial design engineering Department of Mechanical Systems Engineering (B. Eynard) Modeling and optimization of products and structures (P. Lardeur) Integrated mechanical design (P. Revel) Integrated production and logistics (M. Bosch-Mauchand) Master of Science and Technology : Mechanics and systems (A. Rassineux) Mechatronic systems (C. Prelle) Design of innovating and sustainable structures (A.Rassineux, S.Bouvier) Doctoral school SPI ED071

  7. COMPUTATIONAL MECHANICS TEAMHead – Alain Rassineux

  8. Scientific Positioning

  9. Diffuse Approximation

  10. Development of Custom-Built Methods and Models Strong Discontinuity Methods (MDF) : beams, plates, shells, elasto-plastic and elasto-damagable materials.Static and cyclic mechanical loads, taking into account geometric imperfections influence on rupture behavior Adaptation of MDF to multiple cracks (close surface layers) Simulation of the ductile tearing by the BEM and a local damage models : nonlinear problems, FEM/BEM coupling, crack propagation in presence of residual stresses Fluid-structure interaction in rocket engines : analysis of side-loads MACADAM MICADUR, Ressourcement Carnot, CISSCOH Partenariats industriels : EADS, CNES

  11. Digital Image Correlation Measurements : snapshots with digital cameras and long distance microscope, during the test Reconstructing the displacement by digital image correlation Initiatiation and propagation of cracks in complex mechanical structures. Field measurement techniques applied at fine scales using a long distrance microscope Description of the rupture in close surface layers in metal/oxyde systems with mechanical loads in presence of imperfections (transversal periodic cracking in oxydated layer and decohesion at the metal/oxyde interface for Ni/NiO and Zr/ZrO2) MACADAM MICADUR, Ressourcement Carnot

  12. Modeling of Interfaces-Meshing-Adaptation-Transfer CNRS/CONICYT, ECOS Sud, OASIS, RIVES, PILCAM2, RP3, IMTI Codes Diamesh2D/3D : Free for universities, 20 inquiries/year (international)

  13. Modeling of Sheet Metal Forming and assembly processes OASIS (FUI), 2 CIFRE Industrial partner : ARCELOR MITTAL

  14. Multidisciplinary Design Optimization & ROM OMD, OMD2, OASIS, DEMECORE, PILCAM2, IMTI

  15. Computational Fluid Dynamics – Computational Hydraulics RIVES, ITRANSFLU, FLUPARTI, GDR 2902

  16. Uncertainy Qualification in Mechanical Design Integrated Engineering and Reliable Design Hierarchical approach to establish a link between variability of a given performance criterion and the variablity of behavior of main components of the vehicle. Uncertainty Qualification in finite element models in statics vibration and acoustics for industrial problems. Integration of design, simulation and manufacturing. Developpement of product models taking into account management of parameters, relationships and knowledge relative to product life cycle (in particular in the manufacturing and assembly phases) Relaible design and product performance evaluation APPROFI, PHENIX, MADUSE, DEMECORE, MAEVA

  17. High Performance Computing Platform Contact on rough Surface ~107 finite elements

  18. ACOUSTICS & VIBRATIONS TEAMHead – Mabrouk Ben Tahar email :acou-roberval@utc.fr

  19. Objectives & Positioning Comfort FEM Development of innovative numerical and experimental methods for analysis and optimization of vibro-acoustic performances of structures leading to a better acoustic comfort and reduction of radiated noise Exterior noise Exterior noise Aerodynamics Materials Exterior noise Air-born Structure-born noise

  20. Highligts - Numerical and experimental methods for analysis of acoustic wave propagation in moving media (duct-flow) - VA numerical methods including complex materials (porous media, polymers…) • 3 main axes of research • A1 : Interaction flow/acoustics : guided wave propagation with flow • A2 : Interaction structures/ materials/acoustics • A3 : Identification and separation of sources

  21. Vibro-Acoustic Experimental Platform Anechoic chamber with low noise tunnels Test bench for aeronautical applications : MACH +/- 0.3 Test bench for automotive applications : MACH + 0.05 Acoustics measurement devices in presence of a mean flow. Semi-anechoic chamber coupled with reverberation room acoustic transparency measurement

  22. Vibro-Acoustic Experimental Platform (continued) • 3D Laser scanning vibrometer (Polytec)  • High spatial resolution • Intuitive 3D animation of measurement results • separation of out-of-plane and in-plane vector components • 3D geometry scan unit • Microphone antenna Bruel & Kger Combo  • Diameter 1 m • 60 microphones, random distribution • Multichannel acquisition system (64 channels) • Acoustical holography, beamforming

  23. MATERIALS & SURFACE SCIENCE TEAMHead – Gérard Moulin

  24. Materials Science: Multiscale Approach • Failure mecanisms identification • Numerical modeling 3D Composites • Interaction bio-sourced fibers / Matrix Short fiber Composites - Interaction microstructure/plasticity/failure - Thin films oxydation Polycrystals and thin films Semi-crystalline , amorphous polymers and nanocomposites Confinement effect Interaction microstructure/mechanical behavior/environment Length scale nm µm mm

  25. Composite Materials Out of plane tests Video_microscopy RVE Acoustics Emission Strain field measurement IR Thermography

  26. Fatigue, Plasticity and Oxydation Slip band ∆εp/2 50 nm GRAIN 1 fissure GRAIN 2 GRAIN 3 Damage quantification Mechanical characterization (AFM) Models with physical insight Crystallographic orientation Interaction Dislocation / Microstructure modèle physique N° cycles

  27. Polymer Science Morphological characterization Multiscale Modeling Predictive models developement Nano-scale characterization Charge discontinuity due to heterogeneity (AFM) Confinement effect of amorphous phase (DMA)

  28. Polymer Science (continued) Block co-polymers Phase segregation and mechanical modeling SAXS data (Argonne National Lab. And Soleil synchrotron

  29. Mechanical Testing Platform • Processing of 3D reinforced composites  • tufting Robot • RTM (resin transfert molding) and Polyester • curing oven, cutting equipment • Injection moulding machine (50 tons) • Twin screws extruder • Mechanical testing, observation and characterization means • Atomic Force Microscope (AFM) • Field Emission Scanning Electron Microscope (SEM) with Electron Backscatter Diffraction (EBSD) • Wide angle X-ray scattering (WAXS) • Glow discharge optical spectroscopy • HaakeMiniJet sample preparation tool • Permeameter • Nano-indenter • infrared camera • image correlation • Viscoanalyzer

  30. Industrial Collaborations (non-exhaustive) Automotive : RENAULT, PSA, INERGY Aerospace : ONERA, EADS, SNECMA, BMW, NLR (The Netherlands), ROLLS-ROYCE (UK) Energy : CEA, EDF Steel : Arcelor-Mittal Research organizations : LCPC, INRETS, CETIM

  31. French National Excellence Initiative • LABEX MS2T – Technological Systems of Systems • 3 Joint Research Units UTC-CNRS : BMBI+Heudiasyc+Roberval • design, analysis and control of technological systems • EQUIPEX Figures - Pluridisciplinary research serving medical disfigurations • markers or quantitative measurements that can be used to analyze and store facial mimicry IRT RAILENIUM – Safety and Railway Infrastructure Maintenance wheel/rail contact and wear of materials unique experimental facilities IEED PIVERT – Green Refinery for Sustainable Energy simulation and optimization bio-sourced composite materials

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