A Relocalization Technique for the Multiscale Computation of Delamination in Composite Structures
O. Allix; P. Kerfriden and P. Gosselet

Source CMES: Computer Modeling in Engineering & Sciences, Vol. 55, No. 3, pp. 271-292, 2010
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Keywords Domain decomposition, multiscale, LaTIn solver, parallel computation, delamination, crack propagation, cohesive zone model, composite laminates.
Abstract We present numerical enhancements of a multiscale domain decomposition strategy based on a LaTIn solver and dedicated to the computation of the debounding in laminated composites. 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. We show that performing nonlinear subresolutions in the vicinity of the front of the crack at each prediction stage of the iterative solver permits to restore the effectiveness of the method.
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