The numerical results show that the value of the normalized DSIF increases quickly from zero with time, reaches a peak value and then decreases slowly, finally oscillating around the corresponding static value when the time approach the large value.

• 结果表明:无量纲动应力强度因子随时间T由零迅速增大,很快达到一个峰值,然后缓慢衰减:当T较大时,在其对应的静态值附近作微小振荡。