Materials science & engineering. A
Résumé
Simulations of the elastoviscoplastic behaviour of f.c.c. single crystals are performed. The work includes the setting of specific constitutive laws. The viscoplastic behaviour of single crystals is described with a dislocation-based model. As the behaviour of single crystals is highly non-linear, a dedicated finite element code is developed in order to compute uniaxial tests with the tensile axis put inside the stereographic triangle. This simulation reveals wide possibilities of the combination of suitable physical models and numerical tools. It is shown that the adopted constitutive laws are able to give back complex experimental evidence.