本文探討無限域異向性線彈性體，內含一線剛性異質物與一裂紋之互制行為，應用無限域內含一中央線剛性異質物，受一差排作用之基本解，將此問題轉換為一組以未知差排密度函數分佈於裂紋面上之奇異積分方程，利用數值方法求解此積分方程並間接推得裂紋尖端之應力強度因。受均佈拉曳力作用下，文中探討線剛性異質物與裂紋尺寸、線剛性異質物與裂紋尖端距離、裂紋傾角以及異向性材料之異向程度等對應力強度因子之影響。

The interacting problem of a rigid line and a crack embedded in the anisotropic elastic medium of infinite extent under uniform loading at infinity is investigated. Based on the Stroh formalism and with the Green’s function for a point dislocation, a system of singular integral equations for the unknown dislocation densities defined on the crack faces is derived. Numerical method is then used to calculate the solutions to the system of equations. Results are presented graphically for the stress intensity factors for orthotropic and monoclinic materials for the medium subjected to different uniform loading at infinity. The effects of the distance between a rigid line and the crack on stress intensity factors are discussed in some detail.

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