Self-consistent modelling of heterogeneous materials with an elastic-viscoplastic behavior: Application to polycrystalline agregates

Charles Mareau (1) , Stéphane Berbenni (2)

1 LAMPA - PMD - Laboratoire des Arts et Métiers ParisTech d'Angers - Procédés Matériaux Durabilité
2 LEM3 - Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux

The self-consistent scheme is a common homogenization method that was developed to connect local deformation mechanisms to the overall behavior of heterogeneous disordered materials. In the past decades, many efforts have been made to obtain extensions of the self-consistent approximation to the non-linear case. This work focuses on the specific case of heterogeneous materials with an elastic-viscoplastic behavior. For such materials, the overall behavior is strongly dependent on the space-time couplings originating from the differential form of the local constitutive law. Different approaches have thus been developed to describe the impact of such complex couplings on the overall behavior. (...)

Mots clés: Heterogeneous materials; Elastic - viscoplastic behavior

Domaines: Matériaux; Mécanique [physics.med-ph]; Mécanique des matériaux [physics.class-ph]

Charles Mareau, Stéphane Berbenni. Self-consistent modelling of heterogeneous materials with an elastic-viscoplastic behavior: Application to polycrystalline agregates. International Conference on Material Modeling (4; 2015; Berkeley), 2015, Berkeley, United States. ⟨hal-01321060⟩