A novel concurrent multiscale method for the crack propagation analysis in heterogeneous materials is proposed, based on a non-overlapping domain decomposition technique coupled with an adaptive zoom-in strategy. Both fiber/matrix interfacial debonding and matrix cracking are accounted for; the latter one is modeled by using an innovative shape optimization method coupling a moving mesh technique and a gradient-free optimization solver. Numerical applications are carried out with reference to the failure analysis of a single notched fiber-reinforced composite beam subjected to both mode-I and mixed-mode crack propagation conditions. The validity of the proposed method is assessed through original comparison models.

Crack propagation analysis in composite materials by using moving mesh and multiscale techniques

GRECO, Fabrizio;Leonetti L;LONETTI, Paolo;NEVONE BLASI, Paolo
2015

Abstract

A novel concurrent multiscale method for the crack propagation analysis in heterogeneous materials is proposed, based on a non-overlapping domain decomposition technique coupled with an adaptive zoom-in strategy. Both fiber/matrix interfacial debonding and matrix cracking are accounted for; the latter one is modeled by using an innovative shape optimization method coupling a moving mesh technique and a gradient-free optimization solver. Numerical applications are carried out with reference to the failure analysis of a single notched fiber-reinforced composite beam subjected to both mode-I and mixed-mode crack propagation conditions. The validity of the proposed method is assessed through original comparison models.
Concurrent multiscale methods; Composite materials; Crack propagation; Micromechanics; Moving mesh; Interface debonding
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11770/141459
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