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Crack propagation modelling using an advanced remeshing technique

Abstract : The modelling of a crack propagation through a finite element mesh is of prime importance in fracture mechanics. We propose here a solution based on an advanced remeshing technique. A fully automatic remesher enables us to deal with multiple boundaries and multiple materials. The propagation of the crack is achieved with both remeshing and nodal relaxation. A maximal normal stress criterion is used to compute the crack direction. Several tools are developed and presented to obtain accurate results at the crack tip: evolving mesh refinement, crack tip finite elements, ring of elements surrounding the crack. Finally, several applications are presented to show the robustness of this technique.
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Submitted on : Friday, March 9, 2012 - 11:57:58 AM
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Pierre-Olivier Bouchard, François Bay, Yvan Chastel, Isabelle Tovena. Crack propagation modelling using an advanced remeshing technique. Computer Methods in Applied Mechanics and Engineering, Elsevier, 2000, 189 (3), pp.Pages 723-742. ⟨10.1016/S0045-7825(99)00324-2⟩. ⟨hal-00677709⟩



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