Finite Element Modelling of Mixed Mode Crack Propagation
Abdulnaser M. Alshoaibi
Dr. Author Abdulnaser M. Alshoaibi, Department of Mechanical Engineering, Jazan University, Jazan, P.O. Box, Kingdom of Saudi Arabia.
Manuscript received on October 14, 2015. | Revised Manuscript received on October 27, 2015. | Manuscript published on November 05, 2015. | PP: 61-66 | Volume-5 Issue-5, November 2015 . | Retrieval Number: E2745115515/2015©BEIESP
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Abstract: This paper illustrates an algorithm for automatic simulations of crack propagations in 2D linear elastic finite element representation. The crack tip singularity and stress intensity factors around the crack tip are obtained by using the displacement extrapolation method. The crack propagation direction can be predicted by using the maximum circumferential stress theory criterion. The developed program has been examined with two different types of geometries namely: single edge cracked plate with one hole and double edge cracked plate with two holes with different types of loading. The results obtained by the current program have been assessed by comparing with the relevant works.
Keywords: Finite element method, crack trajectories, holes, stress intensity factors, adaptive mesh.