Procédure adaptative pour le calcul des structures: application à la mise en forme des matériaux solides

Abstract : This article presents a numerical methodology which aims to improve virtually any metal forming processes. This methodology is based on elastoplastic constitutive equations accounting for non-linear mixed isotropic and kinematic hardening coupled with isotropic ductile damage. The necessary steps to remesh a damaged structure in finite element simulation of forming processes including damage occurrence (initiation and growth) are given. An important part of this procedure is constituted by geometrical and physical error estimates. The meshing and remeshing procedures are automatic and are implemented in a computational finite element analysis package (ABAQUS/Explicit solver using the Vumat user subroutine and BL2D-V2 adaptive mesher). The proposed approach is based A 2D examples are provided to emphasize the efficiency of the proposed method.
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Abel Cherouat, Houman Borouchaki, Khemais Saanouni, Patrick Laug. Procédure adaptative pour le calcul des structures: application à la mise en forme des matériaux solides. 7e colloque national en calcul des structures, CSMA, May 2005, Giens, France. ⟨hal-01812979⟩

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