Table des matières
INTRODUCTION GÉNÉRALE
CHAPITRE 1 REVUE DE LA LITTÉRATURE
1.1 Introduction aux tissus osseux
1.2 Exigences fonctionnelles des structures poreuses pour les applications médicales
1.2.1 Exigences biologiques
1.2.2 Exigences mécaniques
1.2.3 Discussion
1.3 Fabrication des structures poreuses
1.3.1 Métallurgie des poudres
1.3.2 Fabrication additive métallique
1.3.3 Discussion et outils utilisés
1.4 Caractérisation des structures poreuses
1.4.1 Propriétés morphologiques
1.4.2 Propriétés mécaniques
1.4.3 Discussion et outils utilisés
1.5 Modélisation des structures poreuses
1.5.1 Approche de modélisation multiéchelle
1.5.2 Relations de mise à l’échelle
1.5.3 Génération de la morphologie des structures poreuses
1.5.4 Discussion et outils utilisés
CHAPITRE 2 MODELING OF METALLIC FOAM MORPHOLOGY USING THE REPRESENTATIVE VOLUME ELEMENT APPROACH: DEVELOPMENT AND EXPERIMENTAL VALIDATION
2.1 Avant-propos
2.2 Résumé
2.3 Abstract
2.4 Introduction
2.5 Characterization of the foam morphology (metrics)
2.6 Modeling the foam morphology
2.6.1 The modeling algorithm
2.6.2 Minimum size of the RVE
2.7 Validation
2.7.1 Foams manufacturing
2.7.2 Experimental validation
2.8 Discussion
2.8.1 Convergence of the RVE metrics
2.8.2 Mapping of the RVE
2.8.3 Experimental validation
2.8.4 Medical applications
2.8.5 RVE creation time
2.9 Conclusions
2.10 Acknowledgments
CHAPITRE 3 DESIGN, MANUFACTURE AND TENSILE PROPERTIES OF STOCHASTIC POROUS METALLIC STRUCTURES
3.1 Avant-propos
3.2 Résumé
3.3 Abstract
3.4 Introduction
3.5 Methodology of design, manufacture and testing of stochastic porous structures
3.5.1 Presentation of the multiscale modeling approach
3.5.2 Specimen design, manufacture and test process flow
3.5.3 Tensile specimens design
3.5.3.1 Minimum size of an RVE
3.5.3.2 Specimens with target porosities and porosity gradient
3.5.4 Specimens manufacture
3.5.5 Tensile testing
3.6 Results
3.7 Discussion
3.7.1 Scaling relations, experimental results and model validation
3.7.2 Morphology-generation algorithm and porosity gradient
3.7.3 Medical applications
3.8 Conclusion
3.9 Acknowledgments
CHAPITRE 4 DEVELOPMENT OF A POROUS METALLIC FEMORAL STEM: DESIGN, SIMULATION, MANUFACTURE AND MECHANICAL TESTING
4.1 Avant-propos
4.2 Résumé
4.3 Abstract
4.4 Introduction
4.5 Methodology of the porous stem development
4.5.1 Design of the porous stem
4.5.1.1 Identification of the dense and porous zones of the stem
4.5.1.2 Structural requirements for bone ingrowth, manufacturing limitations and porosity-dependent mechanical properties
4.5.2 Fabrication of the porous stem
4.5.2.1 Data preparation for selective laser melting additive manufacturing
4.5.2.2 Manufacturing and post-processing of the stems
4.5.3 Numerical analysis and experimental testing
4.5.3.1 Testing guidelines
4.5.3.2 Numerical analysis
4.5.3.3 Experimental testing
4.5.3.4 FE model validation: comparison of the numerical and experimental data
4.6 Results
4.6.1 Load-displacement diagram
4.6.2 Displacement and strain field
4.7 Discussion
4.7.1 Experimental validation
4.7.2 Manufacturing limitation
4.7.3 Surface-to-volume ratio
4.7.4 Future work
4.8 Conclusion
4.9 Acknowledgments
4.10 Appendix A
4.11 Supplementary information
DISCUSSION GÉNÉRALE ET CONTRIBUTIONS SCIENTIFIQUES
CONCLUSION GÉNÉRALE
RECOMMANDATIONS
LISTE DE RÉFÉRENCES BIBLIOGRAPHIQUES
