该文研究了含环形裂纹功能梯度管的扭转冲击问题。
A torsional impact problem of a cylindrical crack in a functionally graded pipe is investigated.
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。
The results show that when the annular crack is away from the interface, the normalized stress intensity factors at the crack tips decrease with increasing time.
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