SIMULATION OF MIXED-MODE FATIGUE CRACK PROPAGATION IN STEEL PLATES USING EXTENDED FINITE ELEMENT METHOD
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Abstract
This paper presents the simulation of mixed-mode fatigue crack propagation in steel plates and fatigue life prediction using the extended finite element method (XFEM). In the simulation, the interaction integral method was used to evaluate the stress intensity factors (SIFs) and the fatigue growth rate was based on the Paris’s equation. After validated with previous studies, the finite element models were used to investigate the effects of an initial crack angle on the crack path and fatigue life for the steel plate with an edge crack subjected to tension or bending. The simulation results showed that the crack path converged to the mode-I condition (zero angle) for all initial crack angles. Also, the fatigue life increased significantly when the initial crack angle was greater than 45 degree.
Article Details
The published articles are copyright of the Engineering Journal of Research and Development, The Engineering Institute of Thailand Under H.M. The King's Patronage (EIT).
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