J. Phys. IV France 105 (2003) 123
Simulation by periodic homogenization of the behavior of a polycrystalline material in large elastoplastic transformationsS. Elbououni1, 2, S. Bourgeois1, O. Débordes1 and A. Dogui2
1 Laboratoire de Mécanique et d'Acoustique & ESM2, Technopôle de Château Gombert, 13451 Marseille cedex 20, France
2 Laboratoire de Génie Mécanique, ENIM, 5019 Monastir, Tunisia
We present an approach based on periodic homogenization theory, in order to numerically study the anisotropy due to large elastic-plastic strains. This work presents a two levels finite element method to calculate an elastic-plastic polycristalline structure. The first level, at the scale of the structure, is classical, except that the constitutive material behavior in each integration point is numerically obtained by a second level of finite element calculations on a representative polycristalline basic cell made of several FCC single cristal with different orientations. A parallel numerical approach is also used.
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