A cohesive XFEM model for simulating fatigue crack growth under various load conditions

R. Dekker (Corresponding author), Frans P. van der Meer, Johan Maljaars, Lambertus J. Sluys

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

This study presents calibration and validation of a cohesive extended finite element model for fatigue crack propagation in ductile materials. The approach relies on a separation between plasticity around the crack tip and fatigue crack growth at the crack tip such that the influence of plasticity on fatigue driving forces is predicted. This implies that characterization of crack growth requires effective Paris parameters. It is shown that the calibrated model can capture fatigue crack growth behaviour in ductile materials for in-phase and out-of-phase biaxial fatigue loading as well as in-phase biaxial loading with an overload.
Original languageEnglish
Article number107688
Number of pages15
JournalEngineering Fracture Mechanics
Volume248
DOIs
Publication statusPublished - 13 Mar 2021

Keywords

  • Fatigue crack growth
  • XFEM
  • Cohesive zone model
  • Overload
  • Mixed-mode
  • Out-of-phase

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