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Determination of Stress Intensity Factors for Interfacial Cracks Using the Virtual Crack Extension Approach
Computer Modeling in Engineering & Sciences 2004, 5(3), 189-200. https://doi.org/10.3970/cmes.2004.005.189
Abstract
A new finite element analysis procedure is implemented for the determination of complex stress intensity factors in interfacial cracks. Only nodal displacements and strain energies of the near-crack-tip elements are involved in this procedure so that element stiffness matrices need not be made available. The method is first tested using a closed form solution for infinite media to obtain a suitable finite element mesh. It is then applied to finite plates and four-point bending specimens containing interfacial cracks. In cases where reference values are available for comparison, good agreement of results can be obtained with relatively coarse element meshes.Keywords
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