Paper published in a book (Scientific congresses and symposiums)
Full discontinuous Galerkin formulation of shell in large deformations with fracture mechanic applications
Becker, Gauthier; Noels, Ludovic
2011 • In Hogge, Michel; Van Keer, Roger; Dick, Eriket al. (Eds.) Proceedings of the 5th International Conference on Advanded COmputational Methods in Engineering (ACOMEN2011)
[en] Different methods have been developed to model tearing prediction, as e.g., the combination between the cohesive principle and the finite element method. Unfortunately, this method has some well known issues that can be fixed by recourse to discontinuous Galerkin formulation. Such a formulation allows to insert very easily an extrinsic cohesive element at onset of fracture without any mesh modification. This promising technique has been recently developed by the authors for linear shell. Although promising numerical results were obtained, it is difficult to compare the method with experiments due to the large plastic deformation present in material before the fracture apparition. Thus, the method is extent herein to elasto-plastic finite deformations. The simulations of some benchmarks prove the ability of this new framework to model accurately the continuum part of the deformation and the crack propagation.