摘要
将边界奇异权法引入无网格方法中,通过对移动最小二乘近似(MLS)形函数进行修正,实现了本质边界条件在结点处的精确施加.将其应用于线弹性断裂力学问题的求解,计算了复合型裂纹的应力强度因子,分析了裂尖附近应力场,并与完全变换法的计算结果进行了对比.
The essential boundary conditions were imposed in mesh free method by applying the boundary singular kernel method and revising the moving least square（MLS） shape function. This method was used in linear elastic fracture mechanics. The stress intensity factors of mixed-mode cracks were calculated and the stress field near the crack tip was analyzed. The results were also compared with those of full transformation methods.
出处
《山东大学学报（工学版）》
CAS
2008年第3期123-126,共4页
Journal of Shandong University（Engineering Science）
关键词
无网格法
边界奇异权法
应力强度因子
mesh-free method
boundary singular kernel method
stress intensity factor
