三维表面半椭圆裂纹应力强度因子计算  

The Calculation of Stress Intensity Factors of Surface Semi-Elliptic Crack in Three Dimensional Body.

作　　者：钱俊[1] 

机构地区：[1]华东工学院应用力学系

出　　处：《华东工学院学报》1992年第3期86-91,共6页

摘　　要：该文利用三维表面半椭圆裂纹应力应变场解答在裂纹尖端构造奇异应力元,奇异元外围划分常规的位移元,应用分区混合有限元法计算裂纹尖端不同位置处的应力强度因子。In this paper,a newly derived solution of stress and strain isapplied to construct a singular stress element at the tip of surface semi-ellipticcrack in three dimensional body,common displacement elements are distribut-ed over the out region of the singular element,sub region mixed FEM is used tocompute stress intensity factors in different positions at the tip of the crack.

关 键 词：表面裂纹 应力场 有限元 断裂力学 

分 类 号：O346.1[理学—固体力学]