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

Journal article (2021)

Authors

R. Dekker Applied Mechanics - CEG
F.P. van der Meer Applied Mechanics - CEG
J. Maljaars Eindhoven University of Technology, TNO
Lambertus J. Sluys Materials- Mechanics- Management & Design
Research Group
Applied Mechanics (CEG) (TU Delft)
Copyright: © 2021 R. Dekker, F.P. van der Meer, J. Maljaars, Lambertus J. Sluys
DOI
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https://doi.org/10.1016/j.engfracmech.2021.107688
Fatigue crack growth XFEM Mixed-mode Cohesive zone model Overload Out-of-phase
More Info
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Published Date

2021

Language

English

Faculty

Civil Engineering & Geosciences

Department

Materials- Mechanics- Management & Design

Research Group

Applied Mechanics

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.