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Adaptive remeshing for ductile fracture prediction in metal forming. (English) Zbl 1177.74361

Summary: The analysis of mechanical structures using the finite element method in the framework of large elastoplastic strain, needs frequent remeshing of the deformed domain during computation. Indeed, the remeshing is due to the large geometrical distortion of finite elements and the adaptation to the physical behavior of the solution. This paper gives the necessary steps to remesh a mechanical structure during large elastoplastic deformations with damage. An important part of this process is constituted by geometrical and physical error estimates. The proposed method is integrated in a computational environment using the ABAQUS/Explicit solver and the BL2D-V2 adaptive mesher.

MSC:

74S05 Finite element methods applied to problems in solid mechanics
74R20 Anelastic fracture and damage
74C15 Large-strain, rate-independent theories of plasticity (including nonlinear plasticity)
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