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3D crack propagation with cohesive elements in the extended finite element method

Ferté, G. ; Massin, P. ; Moës, N.

Computer methods in applied mechanics and engineering, 2016-03, Vol.300, p.347-374 [Periódico revisado por pares]

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Título:
3D crack propagation with cohesive elements in the extended finite element method
Autor: Ferté, G. ; Massin, P. ; Moës, N.
Assuntos: Brittleness ; Cohesion ; Cohesive zone models ; Computation ; Crack propagation ; Cracks ; Engineering Sciences ; Equivalence ; Fracture mechanics ; Materials and structures in mechanics ; Mathematical models ; Mechanics ; Quasi-brittle fracture ; Size effect ; X-FEM
É parte de: Computer methods in applied mechanics and engineering, 2016-03, Vol.300, p.347-374
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: A model is presented that accurately describes brittle failure in the presence of cohesive forces, with a particular focus on the prediction of non planar crack paths. In comparison with earlier literature, the originality of the procedure lies in the a posteriori computation of the crack advance from the equilibrium, instead of a most common determination beforehand from the stress state ahead of the front. To this aim, a robust way of introducing brittle non-smooth cohesive laws in the X-FEM is presented. Then the a posteriori update algorithm of the crack front is detailed. The crack deflection angle is computed from cohesive quantities exclusively, by introducing equivalent stress intensity factors. The procedure shows good accordance with experiments from the literature.
Editor: Elsevier B.V
Idioma: Inglês

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