Multiaxial Fatigue Life Prediction Based on Short Crack Propagation Model with Equivalent Strain Parameter
Multiaxial Fatigue Life Prediction Based on Short Crack Propagation Model with Equivalent Strain Parameter
复制标题
基于等效应变参数的短裂纹扩展模型的多轴疲劳寿命预测
DOI：
10.1007/s11665-017-3075-y
复制
发表时间：
2018
影响因子：
2.3
通讯作者：
Wang Xiao-Wei
中科院分区：
文献类型：
--
作者：
Zhao Xiang-Feng;Shang De-Guang;Sun Yu-Juan;Song Ming-Liang;Wang Xiao-Wei
The maximum shear strain and the normal strain excursion on the critical plane are regarded as the primary parameters of the crack driving force to establish a new short crack model in this paper. An equivalent strain-based intensity factor is proposed to correlate the short crack growth rate under multiaxial loading. According to the short crack model, a new method is proposed for multiaxial fatigue life prediction based on crack growth analysis. It is demonstrated that the method can be used under proportional and non-proportional loadings. The predicted results showed a good agreement with experimental lives in both high-cycle and low-cycle regions.
