基于虚拟裂纹闭合法分析研究构件应力强度因子的计算  

Analysis and investigation of calculation of stress intensity factor of component with virtual crack closure method

作　　者：赵志平[1] 孙智甲[2] 李有堂[2] 

机构地区：[1]兰州工业学院基础学科部,甘肃兰州730050 [2]兰州理工大学机电工程学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2015年第4期168-172,共5页Journal of Lanzhou University of Technology

基　　金：甘肃省教育厅基金(0612B-04)

摘　　要：在分析应用二维及三维虚拟裂纹闭合法计算裂纹尖端应变能释放率的基础上,将三点弯曲试样的应力强度因子解析解与以ANSYS为平台,应用虚拟裂纹闭合法所得计算结果进行对比.结果表明,解析解与虚拟计算结果相当吻合,说明虚拟裂纹闭合法可用于三点弯曲试样的数值分析与计算.Based on the analysis of the strain energy release rate at crack tip by using two-dimensional and three-dimensional virtual crack closure method （VCCM）, the analytical solution of stress intensity factor of three-point bend specimen was compared with the calculation result obtained with VCCM on the platform of ANSYS. The result showed that the analytical solution are consistent well with virtual calculation result, manifesting that the virtual crack closure method can be used in numerical analysis and calculation of three-point bend specimens.

关 键 词：虚拟裂纹闭合法 应变能释放率 三点弯曲试样 解析解 试验结果 对比 

分 类 号：O346.1[理学—固体力学]