Virtual Metal Forming with Damage Occurrence Using Adaptive Remeshing

Abdelhakim Cherouat 1 Khémaïs Saaouni 1 Houman Borouchaki 2, 1 Patrick Laug 3
1 LASMIS - Laboratoire des Systèmes Mécaniques et d'Ingénierie Simultanée
ICD - Institut Charles Delaunay
2 GAMMA - Automatic mesh generation and adaptation methods
Inria Paris-Rocquencourt
3 Gamma3 - Automatic mesh generation and advanced methods
ICD - Institut Charles Delaunay, Inria Paris-Rocquencourt
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 "strongly" coupled with isotropic ductile damage. During simulation of metal forming processes, where large plastic deformations with ductile damage occur, severe mesh distorsion takes place after a finite number of incremental steps. Hence an automatic mesh generation with remeshing capabilities is essential to carry out the finite element analysis. Besides, when damage is taken into account a kill element procedure is needed to eliminate the fully damaged elements in order to simulate the growth of macroscopic cracks. 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).
Keywords : dynamic explicit scheme error estimate Finite elastoplastic model ductile damage adaptive meshing blanking and pressing processes.
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Journal articles
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https://hal-utt.archives-ouvertes.fr/hal-02283367
Contributor : Jean-Baptiste Vu Van <>
Submitted on : Tuesday, September 10, 2019 - 5:17:20 PM
Last modification on : Monday, September 16, 2019 - 4:35:48 PM

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Abdelhakim Cherouat, Khémaïs Saaouni, Houman Borouchaki, Patrick Laug. Virtual Metal Forming with Damage Occurrence Using Adaptive Remeshing. International Journal of Forming Processes, 2005, 8 (2-3), pp.311-339. ⟨10.3166/ijfp.8.311-339⟩. ⟨hal-02283367⟩

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