Crack nucleation and propagation in highly heterogeneous microstructure models based on X-ray CT images of real materials
Résumé
In this work, crack nucleation and propagation in highly heterogeneous materials models, such as those obtained by micro-CT imagery of real materials, are investigated for the first time by means of the phase field method. The Phase field method is based on a variational formulation of brittle fracture with a regularized approximation of discontinuities. Its various advantages for voxel-based models of microstructures are discussed. A shifted strain split operator algorithm is proposed to handle unilateral contact within cracks in a very efficient manner.
Domaines
Mécanique [physics]| Origine | Fichiers produits par l'(les) auteur(s) |
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