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Boundary integral equation fracture mechanics analysis of plane orthotropic bodies

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Abstract

In this paper, a quick and efficient means of determining stress intensity factors, K I and K II, for cracks in generally orthotropic elastic bodies is presented using the numerical boundary integral equation (BIE) method. It is based on the use of quarter-point singular crack-tip elements in the quadratic isoparametric element formulation, similar to those commonly employed in the BIE fracture mechanics studies in isotropic elasticity. Analytical expressions which enable K Iand K II to be obtained directly from the BIE computed crack-tip nodal traction, or from the computed nodal displacements, of these elements are derived. Numerical results for a number of test problems are compared with those established in the literature. They are accurate even when only a very modest number of boundary elements are used.

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Tan, C.L., Gao, Y.L. Boundary integral equation fracture mechanics analysis of plane orthotropic bodies. Int J Fract 53, 343–365 (1992). https://doi.org/10.1007/BF00034182

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  • DOI: https://doi.org/10.1007/BF00034182

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