Fatigue simulation for titanium/CFRP hybrid laminates using cohesive elements

T. Yamaguchi, T. Okabe, S. Yashiro

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

This paper presents a new numerical approach for predicting fatigue crack growth in fiber-metal laminate (FML). Cohesive elements are used to express the complicated damage consisting of transverse cracking, splitting, and interlaminar delamination. The damage growth in the cohesive elements due to cyclic loading is represented by the conventional damage-mechanics model. The simulation was applied to notched Ti/CFRP hybrid laminates of two stacking configurations. In both cases, the crack growth rate in the titanium layer and the delamination shape agreed well with experiments reported in the literature. Complementary analysis for crack extension in the metal sheet is performed out of consideration of the damage in internal FRP layers. The numerical results demonstrated that the underlying damage modes in the FRP layer must be taken into account to predict the fatigue crack growth at the metal layer in FMLs.

Original languageEnglish
Pages (from-to)1968-1973
Number of pages6
JournalComposites Science and Technology
Volume69
Issue number11-12
DOIs
Publication statusPublished - Sep 1 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Engineering(all)

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