Damage Mechanics of Metal-matrix Composites: Various Levels of Approach
Résumé
Constitutive and damage mechanics of composite materials is discussed, with a special attention to unidirectional metal-matrix composites. Macroscopic thermo-elasto-visco-plastic and damage models based on micromechanical approaches are presented that offer various modeling capabilities between a two-phase and a multi-subvolume model. A micromechanics analysis of transverse creep, using periodic homogenization and finite elements demonstrates the role of the fiber-matrix interphase in the creep resistance of the composite. Such a numerical approach can be used to deliver directly the constitutive response at the component level by a multiscale structural analysis using the FE2 imbricated finite-element method.
Domaines
Mécanique [physics.med-ph]Origine | Fichiers produits par l'(les) auteur(s) |
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