A relocalization technique for the multiscale computation of delamination in composite structures

Olivier Allix (1) , Pierre Kerfriden (1) , Pierre Gosselet (1)

1 LMT - Laboratoire de Mécanique et Technologie

In this article, we present numerical enhancements of a multiscale domain decomposition strategy based on a LaTIn solver and dedicated to the computation of the debounding in laminates. We show that the classical scale separation is irrelevant in the process zones, which results in a drop in the convergence rate of the strategy. The scalability is restored by performing nonlinear subresolutions in the vincinity of the front of the crack, at each prediction stage of the iterative solver.

Mots clés: Domain decomposition; multiscale; LaTIn solver; cohesive zone

Domaines: Mécanique des structures [physics.class-ph]; Mécanique des structures [physics.class-ph]

Olivier Allix, Pierre Kerfriden, Pierre Gosselet. A relocalization technique for the multiscale computation of delamination in composite structures. Computer Modeling in Engineering and Sciences, 2010, 55 (3), pp.271-292. ⟨hal-00537909⟩