A comparative study of three domain-integral evaluation techniques in the boundary-domain integral equation method for transient thermoelastic crack analysis in FGMs
A.V. Ekhlakov, O.M. Khay, Ch. Zhang, X.W. Gao, J. Sladek and V. Sladek

doi:10.3970/cmes.2013.092.595
Source CMES: Computer Modeling in Engineering & Sciences, Vol. 92, No. 6, pp. 595-614, 2013
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Keywords Radial integration method, Cartesian transformation method, cellintegration method, dynamic stress intensity factors, functionally graded materials.
Abstract

A boundary-domain integral equation method is applied to the transient thermoelastic crack analysis in functionally graded materials. Fundamental solutions for homogeneous, isotropic and linear elastic materials are used to derive the boundary-domain integral equations. The radial integration method, the Cartesian transformation method and the cell-integration method are applied for the evaluation of the arising domain-integrals. Numerical results for dynamic stress intensity factors obtained by the three approaches are presented, compared and discussed to show the accuracy and the efficiency of the domain-integral evaluation techniques.

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