摘要
利用三维裂纹分析的边界积分方程方法，研究了三维无限弹性体中两个相等共面矩形裂纹的相互影响，将问题归结为求解三个二维的边界奇异积分方程，并用二次元方法进行了数值计算，获得了一些典型问题的Ⅰ、Ⅱ、Ⅲ型应力强度因子，所得结果可供工程实际应用。
By the boundary integral equation method of three-dimensional crack analysis, the interaction of two equal coplanar rectangular cracks in a three-dimensional infinite elastic body is investigated. The problem is reduced to solve three two-dimensional singular boundary integral equations. Numerical calculation is carried out by using the method of quadratic elements. The stress intensity factors of Mode I, Mode Ⅱ and Mode Ⅲ are obtained for some typical examples, which can be used in engineering.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
1995年第4期50-54,共5页
Journal of Lanzhou University(Natural Sciences)
基金
甘肃省中青年科技基金
关键词
边界积分方程
边界元法
应力强度因子
裂纹
boundary integral equations
boundary element method
stress intensity factors
three-dimensional problems
two rectangular cracks
