Öz
In this study, a rectangular prism made of an orthotropic material is considered. It is assumed that this
prism contains a band crack whose edge-planes are parallel to the upper and lower face planes. It is
also assumed that uniformly distributed normal forces are imposed the top and bottom surface of the
prism. The aim of this paper is t o a nalyze t he e ffect o f t he s hear m odulus on planes which is
perpendicular to the crack’s edge-planes and parallel to the crack’s front on the Energy Release Rate
(ERR) for different geometric parameters in a rectangular prism. The mathematical formulation of the
corresponding boundary-value problem is carried out within the framework of the 3-dimensional linear
theory of elasticity. In order to solve this problem, the 3D finite element method was employed. The
numerical results are presented.