## 留言板

 引用本文: 邢帅兵, 王强胜, 生月, 江晓禹. 圆形杂质对裂纹扩展的影响[J]. 应用数学和力学, 2019, 40(2): 189-199.
XING Shuaibing, WANG Qiangsheng, SHENG Yue, JIANG Xiaoyu. Effects of Circular Inhomogeneity on Crack Propagation[J]. Applied Mathematics and Mechanics, 2019, 40(2): 189-199. doi: 10.21656/1000-0887.390136
 Citation: XING Shuaibing, WANG Qiangsheng, SHENG Yue, JIANG Xiaoyu. Effects of Circular Inhomogeneity on Crack Propagation[J]. Applied Mathematics and Mechanics, 2019, 40(2): 189-199.

• 中图分类号: O346

## Effects of Circular Inhomogeneity on Crack Propagation

Funds: The National Natural Science Foundation of China（11472230）
• 摘要: 在单轴拉伸载荷作用下，运用分布位错方法对无限大平面内含有一个裂纹和一个任意方向的杂质问题进行求解，得到了裂纹尖端的应力强度因子、应力场以及应变能密度.利用最小应变能密度因子准则来判断裂纹扩展方向.结果显示：软杂质对裂纹尖端应力强度因子、应变能密度和应力场有增强作用，而硬杂质则具有屏蔽作用.在 -30°<θ<30°范围内，杂质对裂纹扩展方向的影响较小，而在 -90°<θ<-30°或30°<θ<90°范围内，杂质对裂纹扩展方向的影响较大.软杂质对裂纹扩展有吸引作用，而硬杂质具有排斥作用.
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##### 出版历程
• 收稿日期:  2018-05-02
• 修回日期:  2018-05-17
• 刊出日期:  2019-02-01

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