Numerical simulation of progressive damage and failure in composite laminates using XFEM/CZM coupled approach

R. Higuchi, T. Okabe, T. Nagashima

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

This study seeks to establish a high-fidelity mesoscale simulation methodology that can predict the progressive damage and resultant failure of carbon fiber reinforced plastic laminates (CFRPs). In the proposed scheme, the plastic behavior (i.e., pre-peak nonlinear hardening in the local stress-strain response) is characterized through the pressure-dependent elasto-plastic constitutive law. The evolution of matrix cracking and delamination, which result in post-peak softening in the local stress-strain response, is modeled through cohesive zone models (CZM). The CZM for delamination is introduced through an interface element, but the CZM for matrix cracking is introduced through an extended finite element method (XFEM). Additionally, longitudinal failure, which is dominated by fiber breakage and typically depends on the specimen size, is modeled by the Weibull criterion. The validity of the proposed methodology was tested against an off-axis compression (OAC) test of unidirectional (UD) laminates and an open-hole tensile (OHT) test of quasi-isotropic (QI) laminates. Finally, sensitivity studies were performed to investigate the effect of plasticity and thermal residual stress against the prediction accuracy in the OHT simulation.

Original languageEnglish
Pages (from-to)197-207
Number of pages11
JournalComposites Part A: Applied Science and Manufacturing
Volume95
DOIs
Publication statusPublished - 2017 Apr 1

Keywords

  • A. Laminates
  • B. Strength
  • C. Computational modeling
  • XFEM

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials

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