Stress concentrations caused by bond cracks in single-lap adhesive composite joints

M. Kayupov, Y. A. Dzenis

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

Nonlinear finite element analysis was used to study stress fields in single-lap adhesively bonded composite joints containing cracks of different lengths. It was shown that stresses, energy release rates, and stress intensity factors vary nonlinearly with the crack length. However, a near-linear dependence was observed between the stress intensity factors and the load for cracks of constant length. The analysis showed that the critical values of the energy release rates for fast crack propagation in the final stage of fatigue life were 2-3 times lower than the critical energies for the cracks propagating under quasi-static loading.

Original languageEnglish (US)
Pages (from-to)215-220
Number of pages6
JournalComposite Structures
Volume54
Issue number2-3
DOIs
StatePublished - 2001

Keywords

  • Composite materials
  • Finite element method
  • Fracture
  • Nonlinear analysis
  • Single-lap adhesive joint

ASJC Scopus subject areas

  • Ceramics and Composites
  • Civil and Structural Engineering

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