| Titre : |
Predictive Numerical Model of the Behavior of Polymer Skin-Foam-Skin Multilayers: Influence of the Strain Rate. Comparison Tests / Simulations |
| Titre original : |
Modèle numérique prédictif du comportement des multicouches peau-mousse-peau de polymère : Influence de la vitesse de déformation. Comparaison essais / simulations |
| Type de document : |
thèse |
| Auteurs : |
Prasad Baliram MAHAJAN, Auteur ; Jean-Claude GRANDIDIER, Directeur de thèse ; Éric LAINÉ, Directeur de thèse ; Institut PPRIME UPR CNRS 3346 - PMM, Commanditaire ; Franco FURGIUELE, Rapporteur ; Laurent GORNET, Rapporteur ; Christine ESPINOSA, Examinateur ; Grégory CHAGNON, Examinateur ; Yu WENCHAO, Examinateur ; Marco GIGLIOTTI, Examinateur |
| Année de publication : |
2022 |
| Importance : |
169 p. |
| Note générale : |
NNT 2022ESMA0008
Acknowledgements
Abstract
Résumé
Contents
List of Figures
List of Tables
Appendix
Reference List
|
| Catégories : |
Déformations (mécanique)
Flexion (mécanique)
Matériaux sandwichs:Propriétés mécaniques
Méthodes d'homogénéisation numérique
Microstructure (physique)
Mousses de polymères
Mousses métalliques
Polymères
Porosité
Simulation, Méthodes de
Tomographie
Verre mousse
|
| Résumé : |
GENERAL INTRODUCTION AND PROBLEM PRESENTATION
BIBLIOGRAPHY REVIEW AND TOOLS
Generalities on Sandwitch Structures
Sandwitch Composites with Honeycomb Core
Sandwithc Composite with Foam Core
The Behavior of Polymeric Foam and Constitutive Models
Tools to Build the Foam Behavior
Constitutive Models of Polymer
Discussion
MATERIAL AND CONSTITUTIVE MODEL OF THE BULK
Materials
Sample Preparation
The Experiemental Test Procedure for Monolayer
Experimental Results of Monolayer
Constitutive Model
Impelmentation of Constitutive Model in Abaqus UMAT
Procedure for Identification of the Modulus and Hydrostatic Pressure Coefficent of PPC
Precedure for the Identification of Isotropic Hardening Parameters Using a 3D Identification Tool
Idendification Results of Young's Modulus and Hydrostatic Pressure Coefficient as a Function of Equivalent True Strain Rate for PE
Idendification Results of Young's Modulus as a Function of Equivalent True Strain Rate for PPC
Identification of Viscoplastic Behavior in Function of Equivalent True Strain Rate (PE)
Identification of Viscoplastic Behavior in Function of Equivalent True Strain Rate (PPC)
Validation of a Constitutive Model for PE
Verification of Capabilities of the Constitutive Model of PE
Validation of a Constitutive Model for PPC
Conclusion
CHARACTERIZATION OF SKIN-FOAM-SKIN (SFS)
Multilayer Concept
Mesostructure Characterization
Mechanical Characterization
The Experimental Test Procedure for Multilayer
Experimental Results of Multilayer
CONSTITUTIVE MODEL OF FOAM AND VALIDATION
Protocol to Identify the Consitutive Model of Foam
Assumption
First Validation of Assumption
Model of RVE
RVE Response Curves in the Tensile Test
Identification of Constants of Young's Modulus
Procedure for the Identification of Isotropic Hardening Constants Using 3D Identification Tool DAKOTA
Constitutive Model Dependencies with Porosity (Alpha and Beta)
Discussion
Validation of Model
Conclusion
CONCLUSION AND PERSPECTIVE
|
| En ligne : |
https://tel.archives-ouvertes.fr/tel-04145224 |
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