两种材料平面切口应力强度因子计算  

THE CALCULATION OF STRESS INTENSITY FACTORS OF NOTCH IN TWO DIMENSIONAL BI-MATERIAL

作　　者：钱俊[1] 龙驭球[2] 

机构地区：[1]华东工学院 [2]清华大学

出　　处：《工程力学》1992年第4期24-30,共7页Engineering Mechanics

摘　　要：本文先推导两种材料平面切口尖端应力应变场,然后利用分区混合有限元在切口尖端构造奇异应力元,在应力元外围划分常规的位移元,计算不同切口张角和不同材料比值下切口应力强度因子。In this paper, the expression of stress and strain at the tip of a two-dimensional notch is derived. Singular stress element near the tip of notch is constructed by Sub-Region Mixed FEM. The conventional displacement elements are distributed over the outer region of the singular element. Stress intensity factors of notch with different angles and different ratios of modulus of materials are calculated.

关 键 词：材料 切口 奇异元 应力强度因子 

分 类 号：O346.1[理学—固体力学]