The results show that when the annularcrack is away from the interface, the normalized stress intensity factors at the crack tips decrease with increasing time.
结果表明，给定长度的环形裂纹在尚未接触界面时，其两端正则化的型和型应力强度因子均随时间增大而减小。
2
Solves the problem of boundary value on an annularcrack by using the nonlocal stress solution of an axisymmetric crack problem and approximative method of series expansion.
利用已得到的三维轴对称问题的非局部弹性应力的解，采用级数近似展开的方法，求解环状裂纹的边值问题。
3
The horizontal annular and vertical crack of the high buildings, along with the horizontal crack and the crush of RC column can be due to the vertical seismic component action.