identity and goals - univ-valenciennes.fr

UMR 8201

Identity and Goals Prediction of the behaviour of human systems and technologies

subjected to severe solicitations of type crash and impact until failure. Diversity or variability of behaviours Different scales of observation, Measurement techniques and models under extreme loads

“We aim to develop new methodologies and tools for the comfort and the safety of passengers”

Behaviour, damage and fracture of materials and structural joints Uncertainty and robust design Biomechanics of impact and Human trauma

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Status Members

Professors 5 + 2 (MD) + 2

Associate Professors 6 + 3

Engineers/ Technicians 7

Post Doc./ Contract Researchers 6

PhD Students (on-going) 15

Total 46

Recruitment

Hakim Naceur – sept 09(Assoc. Prof. UT Compiègne)Maxence Bigerelle – sept 11(Prof. UT Compiègne)Research hosting

Professor (MD)Lille II – jan 09

Xavier DemondionChristian Fontaine

Key figures 2009-2012

Invited Prof. : H. Guillemot, D. Subit (Univ. Virginia, USA)A. Gakwaya (Univ. Laval, Canada)B. Zouari (ENI Sfax, Tunisia)

Jamila Rahmoun – sept 09(Dr LML Lille)Nicolas Leconte – sept 10(Dr LAMIH/Onera)Audrey Hault – sept 12(Research Ing. LAMIH)

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Staff 2012

Status Members

Professors 7 + 2 MD

Associate Professors 9

Engineers/ Technicians 7

Post Doc./ Contract Researchers 6

PhD Students (on-going) 15

Total 46


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DRSC joint Lab since 2003Founded in 2003 Partnership UVHC-CNRS/LAMIH and ONERA/DADS/CRD.

ONERA staff represents 7 Research Engineers and 4 Technicians.

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Goals and OriginalityTo understand the physics of materials and structures behaviour under severe loadings (crash, impact)

Scientific challenges Experimental characterisation of materials and structures

(Organic/composite, sandwich and assemblies) under a large strain rate range [10-3-103 s-1]

Behaviour and damage modelling until failure under large strain rate

Multiscale and analytical approaches for sandwich, cellular structures and assemblies under impact.

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Scientific Theme 1Behaviour, damage and fracture of materials and structural joints Members (14) : B. Bennani, B. Bourel, F. Chaari, D. Coutellier, R. Delille, R. Deltombe, G. Haugou, F. Lauro, D. Lesueur, N. Leconte, C. Maréchal, E. Markiewicz, H. Naceur, J. Rahmoun

Development of technological platform for dynamic test on material and assemblies (eg.: Hopkinson bars)

Development of numerical tools to represent the material and the structure behaviours at various scales

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Scientific Theme 1: 2009-2012 Actions

mm cm mµm

Material scale Assembly scale Structure scale

Metals / Polymers / Composites

Welded / Riveted / Bonded assemblies

Behaviour law and rupture criteria at high rate of strain

Multiaxial dynamic strength-rupture &

meso/macro modelling

Energy dissipation FEM and analytical

modelling

Sandwich panels / Cellular structures

Modelling of shell composite structures under dynamic loading using meshless methods – Collaborations Univ. Compiègne, Laval, Biskra

Experimental/numerical study of Al honeycomb behavior under dynamic mixed compression/shear loadings – Collaboration ENI Sfax

Numerical tool for the design of sandwich structures under impact medium strain rates – Collaboration CTSI

Characterization of a polymer and development of the corresponding behaviour law into a FE code – Collaboration TOYOTA Motor Europe

Identification of viscoplastic model parameters using the Virtual Fields Method: Application to Titanium Alloy Ti6Al4V – Collaboration ONERA Lille

Modelling of bonded structures to improve the mixed material assembly – Collaboration ArcelorMittal, Dow, NTNU Trondheim

Towards the macro modeling of riveted assemblies by super-finite element – Collaboration ONERA Lille

Crash/Impact[10-3

– 103]s-1

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Scientific Theme 2

Goals and OriginalityIn the field of linear and non linear structural dynamics :

Metamodelling techniques and numerical methods (homotopyperturbation, projection techniques)

Uncertainty propagation methods (intervals, fuzzy sets, random fields)

Optimization with uncertainty and robust design (coupling of fuzzy sets and genetic algorithm)

Scientific challengesEfficiency : accuracy of the solutions and reduction of computational time

Technological challengesTo develop “Black box” methods : no more relevant expertise needed

Uncertainty and Robust Design

parameter

Coast function

FE modelsInputs

Uncertain parameters(geometrical, material)

Outputs

Frequency, response, …

Members (3) : B. Lallemand, F. Massa, T. Tison

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Scientific Theme 2

2009-2012 Actions

Modal analysis with uncertainty and robust optimization : robust optimization of a component of the Demeter satellite – Collaboration CNES.

Effect of the variability of automotive brake lining surfaces on squeal instabilities – Collaboration MSM, Daimler AG.

Uncertainty propagation for stability analysis of rubbing systems – CISIT Framework

Influence of wheelflat on railway track dynamic response in a time-domain model – Collaboration ASHM / Track Train System Availability framework (Eurotunnel, Gantha).

Uncertainty and Robust Design

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Scientific Theme 3

Goals and OriginalityIn the field of biomechanics of impact:Improvement of the virtual and physical human models for safety.

Scientific challenges

Experimental mechanics on biological tissues and segments Identification of the geometrical and mechanical properties Multiscale and multiphysics modelling

Technological challenges Experimental platforms Morpho adaptative protection in relation with pre-crash positions

Biomechanics of impact and Human traumaMembers (18) : J.H Anceau, B. Bennani, M. Bigerelle, F. Chaari, R. Delille, X. Demondion, P. Drazétic, A. Hault Dubrulle, C. Fontaine, G. Haugou, D. Lesueur, C. Maréchal, E. Markiewicz, H. Morvan, H. Naceur, J. Rahmoun, F. Robache, G. Wavreille.

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Scientific Theme 3: 2009-2012 Actions

mm cm mµm

Material scale Anatomic part scale Human Body scale

Cortical / Trabecular bones

Head/ Thorax/ Upper and lower limbs

Multiscale approaches of behaviour and

rupture

QS and dynamic strength-rupture &


Injury criteria & Restraint systems

Out of Positions & Morphoadaptative protection

Influence of pre-crash driver posture on injury outcome: Airbag interaction with human upper extremities – Collaboration Univ. LILLE II, LAB

Investigation on the interindividual differences influence on submariningin frontal crash – Collaboration LAB Renault-PSA

Epidemiological study applied to the design of wrist guard for snowboarders and rollerbladers – Collaboration Oxylane research

Micromechanical elastoplastic-damage coupled model for the trabecularbone behavior under dynamic loading – Collaboration Univ. Lille II

Integrity, functionality and functionalization of rough surfaces of biocompatible materials – Collaboration Univ. Compiègne

Multi-scale material model for the humerus bone behaviorunder low velocity impacts – Collaboration Univ. Marseille

Analysis of the cortical bone thickness of human thorax based on multi-scale imaging techniques – Collab. CEESAR, Univ. Varsaw, West Bohemia

Experimental and numerical characterisation of the mechanical behaviour of the cranial bone in the case of ballistic applications – Collab. Scient. Police

Crash/Impact[10-3

– 103]s-1

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Scientific production


PhD Thesis defended 16

HDR defended 1

Patents 1Peer reviewed papers Indexed in databases (JCR, Scopus, Medline) 67

Conferences and workshops 90

Books / Chapters in books 4

0102030

Peer rewieved Papers

2009

2010

2011

2012

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Industrial and academics partnershipsKey figures 2009-2012

Behaviour of materials and

structural jointsBiomechanics

Numerical methods

Variability Uncertainty

Experimental platforms

Canada

Norway

Algeria Italy

Belgium

USA

Germany

Tunisia

Belgium

Germany

Luxembourg

Poland

Czech republic

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Viscoelastic-viscoplastic model coupled with non-local damage for

semi-cristalline polymer modelling

R. Balieua,b,c

Co-authors : F. Lauroa,b,c, B. Bennania,b,c T. Matsumotod, E. Mottolad

a Univ Lille Nord de France, F-59000 Lille, Franceb LAMIH, F-59313 Valenciennes, Francec CNRS, UMR 8201, F-59313 Valenciennes, Franced TOYOTA MOTOR EUROPE, B-1140 Brussels, Belgium

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Thermoplastic in structural application

Complex behaviour of thermoplastics

Context

Objective: have an efficient and accurate behaviour model for mineral-filled polypropylene at room temperature

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State of art of polymer modelling

Physical based modelEquations based on the orientation of macromolecularchains.Boyce et al. (1988), Arruda and Boyce (1993), Anand and Gurtin (2003) …

Phenomenological based modelEquations stated in the Continuum Mechanics framework

Viscoplasticity theory coming from metallic materials (VBO) (Kremp and Ho (2001), Krempand Khan (2003))

Viscoplastic model with pressure dependency on the yield surface and non isochoricdeformation (associated) (Ghorbel (2008))

Non associated Viscoplastic model with pressure dependency on the yield surface and nonisochoric deformation coupled with damage (Voyiadjis (2012))

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Originality

Constitutive model for mineral filled polymers

Viscoelastic-viscoplastic model Linear viscoelastic model Rate dependent plasticity

Non-associated viscoplasticity Non-isochoric deformation

Pressure dependency Yield surface Viscoplastic flow (expansion and compaction)

Non-local damage formulation Overcome localisation phenomenon

Coupled

Finite strains

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Constitutive model: Viscoelasticity

Linear Wiechert viscoelastic model

Relaxation stiffness tensor

Elastic stiffness tensors

Relaxation time

D Isotropic damage variable

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Constitutive model: Yield surface

Raghava yield surface

Pressure dependency parameter

Hardening conjugate force

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Constitutive model: Plastic flow

Non associated viscoplastic potential

Flow parameters

Positive pressure

Negative pressure

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Constitutive model: Viscoplasticity

Non associated viscoplastic strain rate tensor

Rate form of the viscoplastic multiplier

Viscoplastic flow direction

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Constitutive model: Damage

Damage evolution

Damage model

Effective stress

Effective yield surface

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Constitutive model: Finite strains

Hypoelastic formulation

Green Naghdi stress rate

Polar decomposition

Additive decomposition

Henky strain tensor

Implementation in a user-material subroutine

Implicit finite element code ABAQUS/Standard® Explicit finite element code LSDYNA®

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Material parameters: ViscoelasticityDynamic Mechanical Analysis (DMA)

Input signal

Storage modulus

Loss modulus

Electromagnetic device

Amplitude: 0,2 mm Rectangular flat specimen: 40x10x3,2 mm

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Material parameters: ViscoelasticityDynamic Mechanical Analysis (DMA)

DMA tests

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Material parameters: ViscoplasticityTensile tests

Quasi-static tests

Mechanical device 1 and 100 mm/min

Dynamic tests

Hydraulical device 0.08, 0.8 and 4 m/s

Normative tensile specimen

Digital Image Correlation

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Material parameters: ViscoplasticitySEE method: behaviour laws at constant strain rates

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Material parameters: Flow and pressureFlow parameter

3.272

Pressure parameter

1.6

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Material parameters: Damage

Continuum Damage Mechanics Compressible

Incompressible

Damage with SEE method

Damage Model

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Damaged laws Strain softening

Numerical problem Localisation Mesh dependency

Behaviour laws (SEE) Damage

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Non-local damage model

Non-local variable Damage variable D

Local variable

Implementation: introduction of a non-local factor

Advantage: Non modifcation of local equations

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Numerical results: Mesh dependency3D cylindrical bar under tensile loading

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Results: Comparisons with experimentsUniaxial tensile test with shell elements

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Results: Comparisons with experimentsUniaxial Compression test with brick elements

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Conclusions

Numerical model for polymer modelling

Linear viscoelasticity Non-associated viscoplasticity Pressure dependency Coupled nonlocal damage model

Experiments for parameter identification

DMA test Tensile and compresion tests SEE method

Implementation of the constitutive model

Implicit and Explicit FEM codes Shell and Brick elements Large strain framework

Aibility of the constitutive model

Rate dependency Volume variation Pressure dependency Mesh independent

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Communications

Balieu R., Lauro F., Bennani B., Bourel B., Nakaya K. (2012). Polymer behaviour and fracture modelsin dynamic. Dymat 2012, Freiburg, Germany, September.

Balieu R., Lauro F., Bennani B., Nakaya K. (2012). An elasto-viscoplastic with damage constitutive model for semi-crystalline polymer. Plasticity 2012, San Juan, PR, USA, janvier.

Balieu R., Lauro F., Bennani B., Bourel B., Nakaya K., Haran E. (2011). Rate dependent model for polymer materials, application to crashworthiness simulation. 3rd International Conference on Impact Loading of Lightweight Structures (ICILLS’2011), Valenciennes, France, juin.

Balieu R., Lauro F., Bennani B., Bourel B., Nakaya K., Haran E. (2011). Polymerfracture criteria in dynamic. 3rd International Conference on Impact Loadingof Lightweight Structures (ICILLS’2011), Valenciennes, France, juin.

Balieu R., Lauro F., Bennani B., Bourel B., Nakaya K., Haran E. (2011). Behaviour model for semi-cristalline polymer, application to crashworthiness simulations. 8th European LS-DYNA Users Conference, Strasbourg, France, mai.

Balieu R., Bourel B., Bennani B., Lauro F., Nakaya K., Haran E. (2010). Polymer behavior models for crashworthiness finite element simulations. Student DYMAT conference, Guthary, France, octobre.

International conferences

National conference Balieu R., Lauro F., Bennani B., Bourel B. (2011). Modèles de comportement pour matériaux polymères

soumis au crash. Actes du 10ème colloque national en calcul des structures, Giens, mai.

Journal publication Balieu R., Lauro F., Bennani B., Dellile R. (2012), A fully coupled elastoviscoplastic damage model at

finite strains for mineral filled semi-crystalline polymers. International Journal of Plasticity. (under review)

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Questions

The present research work has been supported by InternationalCampus on Safety and Intermodality in Transportation, the Nord-Pas-de-Calais Region, the European Community, the Regional Delegationfor Research and Technology, the Ministry of Higher Education andResearch, and the National Center for Scientific Research and TOYOTAMOTOR EUROPE.

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Scientific Project 2

Uncertainty propagation for the stability analysis of rubbing systems

F. MASSA

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Context of the study

Friction-induced vibrations are responsible for a large number of acoustical nuisances

“50% percent of warranty claims concerning the brake system are due to brake noises”

The increase of the exigencies of customers makes these topics become of the utmost importance


SAE J2521 procedure

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Brake squeal shows a highly fugitive nature which is one of the biggest problem to its prediction and elimination


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Background

Squeal is investigated since the earlier years of the 1930’s

Studied at different scales

Different levels of description


microscopic mesoscopic macroscopic

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Originality

Squeal is nowadays still barely understood

Few studies integrate the observed uncertainty


Improvement of selectivity of complex analysis for industrial braking system(squeal simulations)

Development of new methods to facilitate the integration of uncertainty in complex analysis simulations

Industrialresearch

Academicresearch

Daimler CollaborationTEMPO-MSM CollaborationHeussaff & Cazier PhD

Cazier PhD LAMIH-ASHM Collaboration

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Our study (industrial research)

Selection of influent parameters for squeal phenomenon from experimental tests


Wear of linings

Friction coefficient

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Our study (industrial research)

Random fields to take the wear of linings into account

Latin Hypercube Sampling to perform probabilistic analysis

Interval data to take into account the variation of friction coefficients and Young’s modulus of linings

Design of experiments to perform non-deterministic analysis


Heussaff PhD

Cazier PhD

Experimental Numerical

Distribution pressure

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Results and Discussion (industrial research)

Definition of unstable modesfamilies by MAC criterion

Quantification of the stabilityfor each unstable modes family

Identification of experimentalunstable mode not detected with deterministic analysis


Surface

E-Module

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Our study (academic research)

Uncertainty propagation in coalescence graph

Determination of extreme variations of behaviour and Hopf points zone


Deterministic complex analysis

Non-deterministiccomplex analysis

Deterministic transient analysis

Hopf points zone

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Results and Discussion (academic research)

Response surface analysis to divide the coalescence graph in different zones

Local optimization to detect the extreme variation for specific value of friction coefficient


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Results and Discussion (academic research)

Management of contact problem by fuzzy logic controller for the determination of static equilibrium

Reanalysis of perturbed modal basis by homotopy development and projection method


Gap gn Contact loads Fc

Fuzzy logiccontroller

T TcK q F Fφ φ φ = +

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Conclusion

Methodology based on the study of stability of unstable modes families, which is applied in design step by Daimler

[Heussaff 2012 JSV IF=1.872, Heussaff 2012 USD -ISMA, Heussaff 2012 Eurobrake]

New numerical methods concerning modal basis reanalysis, contact management and uncertainty propagation in stability analysis with non-probabilistic data

[Massa 2011 CMAME IF=2.651, Massa 2009 JSV IF= 1.414, Cazier 2012 USD -ISMA]

Starting point in the proposal of a multi-disciplinary IRA project 2012 (LAMIH-C2S, LAMIH-ASHM, LAMIH-DIM, LAMAV-PS, TEMPO-PSI)

“Robust optimization for the stability analysis of large uncertain models of rubbing systems“


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F. MASSA

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Scientific Project 3

Micromechanical elastoplastic-damage coupled model of the

trabecular bone behaviour

J. RAHMOUN

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Micromechanical elastoplastic-damage coupled model of the trabecular bone behaviour


Background Trabecular bone presents an heterogeneous structure and an

anisotropic mechanical behavior (Zysset2010).

Its effective mechanical properties are function of its structural architecture (Cowin1989).

Most of research works propose models based only on macroscopic behavior (Gibson1997, Keaveny2001, Beaupied2007)

Originality Development of a micromechanical model based on Mori Tanaka

scheme adapted for the trabecular and cortical bone.

Extension to nonlinear behavior including plasticity coupled to damage under very large strain.

The need to increase road traffic safety through better prediction of risk of injury

To achieve a virtual biofidelic human body models which can improve the behaviour of actual rigid dummies

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The Mori-Tanaka homogenization scheme random distributions of ellipsoidal inclusions embeddedin an infinite matrix.

The homogenized elastic stiffness tensor of the bone material reads as:

Trabecular bone exhibits transversely isotropic symmetry.

REV is composed of a solid matrix and of N inclusions (r = 1, ...,N)

Linear homogenization method

bone

The case of elastic heterogeneous local behaviour:

Based on matrix-inclusion Eshelby problem strain concentration tensor

Mori-Tanaka Scheme

Where & are volume fractions of inclusions (pores) and the Hill tensor )(rf )(sf56

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Nonlinear mechanical behaviour

A micromechanical model derived in the framework of Gurson limit analysis of a hollow sphere for ductile porous media subjected to arbitrary loadings (Monchiet, 2007)

Trial velocity fields inspired from the Eshelby inclusion problem

The macroscopic yield function with the introduction of a hardening variable is which corresponds to the yield stress :

The porosity evolution law which characterizes the damage growth:

The MCK criterion

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Global mechanical testing on proximal femur

o Experimental setup to simulate a sideways fall on the greatertrochanter.

o Quasi-static compression of 21 femurs up to failure.o Vertical displacement of 10mm/mn.

ApplicationModeling of the human femur under compression loading

Local identification of bone material parameters

o 3 cubic samples extracted from the same femoral head along the neck axis.o Specimens were scanned for the identification of the initial porosity.o Compression mechanical tests are performed with a single-column machine type

Hounsfield H5KT.

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Local identification of bone material parameters

o The inverse identification of matrix material parameters using the FE model.

o The average values are used as bone material data to carry out the globalcompression testing on the femur.


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Mechanical testing of the sideways fall on the proximal femur

o Reconstruction of the 3D geometry of the femur from the digitalized STL inner and outersurfaces of the femur.

o 3D mesh of the femur volume (7400 hex-shell elements).o The FE simulation using the Explicit Dynamic algorithm within LS-DYNA© software.


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o Good agreement for the estimation of the ultimateload supported by the femur before collapse.

o Prediction of damage evolution in the trabecularfemoral bone during compression.

Mechanical testing of the sideways fall on the proximal femur


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Conclusions

Publications Jaziri A., Rahmoun J., Naceur H., Drazetic P., Markiewicz É. (2012). Multi-scale modelling of the trabecular bone elastoplastic

behaviour under compression loading. European Journal of Computational Mechanics, 21(3-6), pp. 254-269, ISSN 1779-7179.

Vandenbulcke F., Rahmoun J., Morvan H., Naceur H., Drazetic P., Fontaine C., Bry R. (2012). On the Mechanical Characterization of Human Humerus using Multi-scale Continuum Finite Element Model. International Research Council on the Biomechanics of injury, Dublin, Ireland, septembre.

Rahmoun J., Halgrin J., Naceur H., Markiewicz É., ChaarI F., Drazetic P. (2011). Multi-scale modeling of the trabecular bone mechanical behaviour. 3rd International Conference on Impact Loading of Lightweight Structures, Valenciennes, France, juin.

Rahmoun J., Chaari F., Markiewicz É., DrazetiC P. (2009). Micromechanical modeling of the anisotropy of elastic biological composites. Multiscale Modeling and Simulation, 8(1), pp. 326-336, ISSN 1540-3459. [IF=2.198]

Contrarily to classical approaches, we propose only few micromechanical materials parameters to describe the complex behavior of the trabecular bone.

The proposed model exhibits very good properties of convergence and stability compared to common FE based models.

Promising results have been obtained using this model to simulate the humerus bone behaviour under impact (IRCOBI2012).

Actual research is undertaken to include the strain rate and marrow effect for the improvement of the global response of the bone under impact.

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Thank you

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Focus on some scientific and/or socio-economics impacts


European patent: MorvanH., Landsheere C., Marhem V.(2012). Driver's desk provided withenergy absorption means for a railvehicle. Bombardier TransportationGmbH et al, n°12169674.4-2422 Dynamic sled testing of

the new desk.

Complex eigenfrequenciesbased method considering variability of the contact interface used by Daimler AG for brake squeal detection

A fully coupled viscoelastic-viscoplastic non local damage model for semi cristallinpolymers implemented in commercial FE codes LS Dyna and Abaqus and transferred to TOYOTA Motor Europe

Software for design of sandwich structure under impact transferred to CTSI

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ProspectiveTheme 1 : Behaviour, damage and fracture of materials and structural joints

Characterisation of reinforced and biosourced polymersNew PhD, Collaborations Toyota & Univ. Mons

Fracture and crack propagation modelling of composites New PhD, Collaborations Bosch, Daimler, Univ. Porto, UTC

Investigation on the Virtual Field Method on dynamic inertial effectsNew PhD, Collaborations ONERA, Univ. Southampton & KU Leuven

mm cm mµm

Material scale Assembly scale Structure scale

Greener materials Multimaterials assemblies

Microstructure evolution / Behaviour-Rupture

relationships

Multiaxial dynamic strength-rupture &


Energy dissipation FEM and analytical

modelling

Sandwich panels / Cellular structures

Crash/Impact[10-3

– 103]s-1Metals / Polymers / Composites Textiles Welded / Riveted / Bonded

Lightweight and Ecofriendlyprotective structures

Macro modelling of the strength and rupture of structural assembliesProjects : ASAP (ANR), Nexter Systems, FASTLITE (Ademe PIA)

New Advanced experimental platforms (CISIT framework)ISIS4D : Regional X-ray micro-tomograph / In-situ complex loading / Controlled environmentINFRAREXT : High speed thermal imaging / Infrared microscopy

Modeling of shape memory alloys under dynamic loadingNew PhD, Collaborations Univ. Pavia & Research Centre H. Tudor

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ProspectiveTheme 2 : Uncertainty and robust design

Towards uncertain non linear contact problems in dynamics:

Large time reduction of simulations : controlled based method for the contactNew PhD & Post-Doc, Collaboration ASHM, CR Position (on going): Antonio Gonzales Sorribes

Proposal of Incitative Research Action (Robust optimization for the stability analysis of large uncertain models of rubbing systems), Collaboration ASHM, DIM, LAMAV (Probability & Statistics)

Coupling of complex eigenfrequency and transient analysisNew PhD, Collaboration Daimler

Railway Track/Wheel interactionProject CERVIFER (Ademe), Collaboration ASHM

Experimental platform (CISIT framework)Dynamic characterization of families of structuresResearch engineer

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ProspectiveTheme 3 : Biomechanics of impact and human trauma

Improvement of the trabecular bone model (multiscale modelling of poro-mechanical behaviour & damage with inter and intra individualities)

Collaboration with LBM, Arts et Métiers Paris Tech

mm cm mµm

Material scale Anatomic part scale Human Body scale

Cortical / Trabecular bones

Head/ Thorax/ Upper and lower limbs

Multiscale approaches of behaviour and

rupture

QS and dynamic strength-rupture &


Out of Positions & Morphoadaptative protection

Crash/Impact[10-3

– 103]s-1

Inter & intra individualities Personalization Biofidel virtual human model

Identification of geometrical and mechanical behaviours of different osseous segments (skull, upper and lower limbs, thorax)

Collaboration with CEESAR, DGA and Forensic Institute of Bern University

Influence of morphologic variability of each segment / mechanical behaviour

Geometrical personalization of anatomic parts FE models

Validation of the development of the physical and numerical models of the human head

New Advanced experimental platforms (CISIT framework)ISIS4D : Regional X-ray micro-tomograph / In-situ complex loading / Controlled environment

Injury criteria & Restraint systems

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Thank you for your attention

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identity and goals - univ-valenciennes.fr

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