摘要
本文采用边界元分区算法研究考虑摩擦的闭合裂纹问题,简单裂纹系问题及非均匀介质中裂纹问题.在裂纹尖端采用了1/4面力奇异单元,并对相应的奇异积分给出了数值处理.对于复杂载荷下裂纹面计算给出了增量迭代算法,并采用方程减缩技术使迭代仅在裂纹上进行.计算实例表明方法是可行的.
Amulti-domain boundary element method is used to compute the stress intensity factors of plane stress/strain crack problems with friction. The analysis is performed by using the traction singular quarter-point boundary elememts on each side of the crack tips. The algarithm of incremental iteration is given. Some specific examples are calculated and the results show that the technique is feasible.
出处
《固体力学学报》
CAS
CSCD
北大核心
1989年第1期1-11,共11页
Chinese Journal of Solid Mechanics
基金
国家自然科学基金资助
