Scattering of sh - wave by a radial collinear crack at the edge of arbitrary - shape - cavity in isotropy media is studied . the solution of dsif at crack tips is obtained 研究了各向同性介质中任意形孔边径向裂纹对sh波的散射，求解了裂纹尖端的动应力强度因子。
2.
The method of crack - division is used to make radial cracks at the edge of cavity . a series of integral equations for determining the dsif at tips of anti - plane crack are set up in terms of the green ' s function 按“契合”的方式和采用裂纹切割技术构造出孔边径向界面裂纹对sh波散射的模型，利用green函数建立直接求解m型裂纹尖端动应力强度因子的定解积分方程组。
3.
Numeral results of dsif at radial crack tips of ellipse and square cavities are provided . then the influences of different shape cavities upon the dsif at the crack of their edges are discussed . 5 . scattering of sh - wave by a radial interface crack at the edge of arbitrary - shape - cavity is studied 给出了椭圆孔和方孔孔边径向界面裂纹尖端动应力强度因子的数值结果，讨论了在不同形状孔、不同入射波数、不同入射角和不同材料常数组合情况下孔边径向界面裂纹尖端动应力强度因子变化的规律。
