SHORT CRACKS AT BIAXIALLY STRESSED NOTCHES: A FINE‐MESH ELASTIC‐PLASTIC FINITE ELEMENT ANALYSIS
SHORT CRACKS AT BIAXIALLY STRESSED NOTCHES: A FINE‐MESH ELASTIC‐PLASTIC FINITE ELEMENT ANALYSIS
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DOI：
10.1111/j.1460-2695.1991.tb00657.x
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发表时间：
1991-02
影响因子：
3.7
通讯作者：
G. Seed;K. Miller
中科院分区：
文献类型：
--
作者：
G. Seed;K. Miller
本文用弹塑性断裂力学方法研究了平面应变下含短裂纹的中心切口和边缘切口的双轴应力场效应。通过有限元分析确定了弹性应力强度因子和非奇异弹性T应力项。这些结果与小规模屈服塑性区尺寸预测的比较给出了广泛的应用应力强度因子，揭示了改进的相关性时，考虑T-应力效应。本文还讨论了正双向应力诱导裂纹闭合对应力强度因子的影响。
An elastic-plastic fracture mechanics study on the effects of biaxial stress fields is presented relating to various centre and edge notches containing short cracks under plane strain. The elastic stress intensity factor and the non-singular elastic T-stress term are determined by finite element analyses. Comparisons of these results with small scale yielding plastic zone size predictions are given for a wide range of applied stress intensity factors, revealing an improved correlation when considering the T-stress effect. The influence of positive biaxial stress-induced crack closure on the stress intensity factor is also discussed.