摘要
采用罚函数法满足无网格法的本征边界条件，给出了罚参数的选择方案。对单裂纹体的应力场进行了分析，讨论了积分围线对应力强度因子计算结果的影响。数值结果表明，该方法可以有效地计算裂纹尖端的应力集中和应力强度因子，并能准确地模拟裂纹的传播。
Penalty method is used to satisfy essential boundary conditions for meshless method, and the penalty parameters are studied for the selection. The stress field of elasticity including single crack is analyzed and the effect of integral contour on computed efforts of stress intensity factors is discussed. Numerical examples show that the present implementation effectively computes stress concentrations and stress intensity factors at cracks, and crack propagation can be accurately modeled.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2001年第4期462-466,共5页
Chinese Journal of Rock Mechanics and Engineering
关键词
无网格法
移动最小二乘法
断裂力学
应力强度因子
Boundary conditions
Crack propagation
Cracks
Elasticity
Numerical analysis
Stress intensity factors
