The interface failure observed in quasi-static fiber pushout tests performed on a model fiber-reinforced composite is simulated using a cohesive volumetric finite element scheme. The numerical analysis is conducted under axisymmetric condition. The debonding process is captured with the aid of intrinsic rate-independent cohesive elements. The augmented Lagrangian approach is used to solve the frictional contact between the crack faces. The numerical method is first applied to a model polyester/epoxy system, showing excellent agreement with the experimentally obtained load-deflection curve and with the observed evolution of the debonding length. The numerical scheme is then further applied in a parametric study of the effects of the friction coefficient, the interfacial bond strength and the process-induced residual stresses on the fiber-matrix interface failure process.

Original languageEnglish (US)
Pages (from-to)8547-8562
Number of pages16
JournalInternational Journal of Solids and Structures
Issue number46-47
StatePublished - Nov 9 2001


  • Cohesive zone model
  • Fiber pullout
  • Fiber pushout
  • Fiber reinforced composite
  • Finite elements
  • Friction

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials


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