摘要
裂纹尖端存在很大的应变梯度,应变梯度效应对裂纹尖端附近的应力场和微尺度下的断裂行为产生显著影响.本文采用基于偶应力理论的无网格迦辽金法计算有限大板单边裂纹尖端的应力场和应力强度因子,分析了偶应力对裂纹尖端的影响.计算结果表明基于偶应力理论的无网格法的有效性和可行性.
There is stress concentration in the crack tip. It has apparent effect on the stress field of the crack tip and the fracture behavior of the material. The stress concentration factor of a finite plate in a uniform tension field with the element-free method was calculated based on the couple stress theory, and the influence of couple stress on the stress field in crack tip was analyzed. The result shows the feasibility and efficiency of this method.
出处
《山东大学学报（工学版）》
CAS
2008年第2期92-95,共4页
Journal of Shandong University（Engineering Science）
基金
国家自然基金资助项目(编号:10572077)
关键词
偶应力理论
应力强度因子
无网格迦辽金法
the couple stress theory
stress concentration factor
element-free method
