利用当量直线裂纹扩展法研究复合型裂纹的能量释放率及相应的断裂判据。
The energy release rate and failure criterion for mixed mode are investigated by means of the method of equivalent linear crack extension.
结果表明：V型缺口试样的裂纹扩展功能较好地反映材料的缺口敏感性。
The results show that the crack propagation work of V-notched specimen can well reflect the notch sensitivity of the tested steels.
分析了功能梯度材料中币型裂纹扩展问题。
The growth of a penny-shaped crack in a functionally graded material is analyzed.
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