Abstract
A method for calculating a stress intensity factor at a tip of cracks in an elastic plate with rectilinear anisotropy is studied based on the body force method, an indirect BEM. The crack is replaced by continuously embedded pairs of concentrated forces and accurate stress intensity factor solutions are obtained by introducing a fundamental density function which expresses the exact stress singularity at an each crack tip. Solutions to the problem of multiple interfering cracks are computed and results are presented in numeric tables and graphs by changing the material properties and a direction of material principal axes as well as crack locations.
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