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Communication Dans Un Congrès Année : 2015

A levet set model for the numerical modeling of composite delamination with nonconforming mesh and minimal remeshing

Résumé

Delamination is one of the main failure processes for composite laminates. Modeling progressive delamination of such materials is thus of particular interest. A new approach has been proposed by F. P. van der Meer et al. a few years ago, which allows for the use of elements larger than the cohesive zone. With this method, the crack front is represented implicitly using a level set field whereas the cohesive zone is supposed to reduce to a line. Consequently, the crack front does not have to remain aligned with the mesh and remeshing is no longer necessary. Weak discontinuities are inserted in the displacement field at crack front location, allowing for a sharp transition between the cracked and uncracked parts. Crack growth is driven by an explicit energy-based relation in which the configurational force is defined as the jump in Eshelby tensor over the front. In this paper, we investigate the case of isotropic multilayered membranes with several crack fronts evolving independently or interacting with each others.
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Dates et versions

hal-01240730 , version 1 (09-12-2015)

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  • HAL Id : hal-01240730 , version 1

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Elia Picault, Patrick Rozycki, Bastien Tranquart. A levet set model for the numerical modeling of composite delamination with nonconforming mesh and minimal remeshing. 20th International Conference on Composite Materials - ICCM20, Jul 2015, Copenhagen, Denmark. ⟨hal-01240730⟩
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