The solution of DSIF at crack tips is obtained. The method of crack-division is used to make radial cracks at the edge of cavity.

• 采用裂纹切割技术构造出孔边径向裂纹，利用哈尔滨工程大学博士学位论文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。