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Computational Analysis of Stress Intensity Factor for a Quarter Circular Edge Crack under Mode-I loading

Author Affiliations

  • 1Department of Mechanical Engineering, R V College of Engineering, Bangalore, INDIA

Res. J. Engineering Sci., Volume 2, Issue (7), Pages 38-427, July,26 (2013)


The paper aims at evaluating the stress intensity factor for a mode I type crack propagation for a square bar specimen with a quarter circular edge crack which is taken as a case study. Finite element analysis is used to determine the stress intensity factor and the simulation is performed on specimens with various crack-length to specimen-width (a/W) ratios. The software used for the analysis is APDL 12.1[ANSYS]. The reliability of the software has been proven using SENB specimen as the benchmark problem. The stress intensity factors are presented and observed along the crack front for different a/W ratios. The stress intensity factor is found to have the maximum value at the edges along the crack front and minimum at the midplane for different a/W ratios.


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