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Determination of Stress Intensity Factors for Interfacial Cracks Using the Virtual Crack Extension Approach

W.M.G.. So1, K.J. Lau1, S.W. Ng1

1 Dept. of ME, HKPolyU, Hong Kong, China

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.

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Cite This Article

So, W., Lau, K., Ng, S. (2004). Determination of Stress Intensity Factors for Interfacial Cracks Using the Virtual Crack Extension Approach. CMES-Computer Modeling in Engineering & Sciences, 5(3), 189–200. https://doi.org/10.3970/cmes.2004.005.189



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