摘要
本文提出了一种计算曲折裂纹尖端应力强度因子的简单方法．对一种油井钻杆材料在不同Ⅰ－Ⅱ复合比加载下的疲劳裂纹扩展行为的研究表明，Ⅱ型成分对裂纹扩展速率有两种趋势相反的影响作用。
A simple method for calculating the stress intensity factors at a kinked crack tip was proposed in this paper. The study of fatigue crack growth rate for one kind of oil drill pipe materials under various mixed mode loading shows that the mode II component has two kinds of opposite influence to the crack growth. The rate of crack growth in different mixed mode conditions is found to be expressed by the following function:da/dN=
出处
《固体力学学报》
CAS
CSCD
北大核心
1994年第3期272-276,共5页
Chinese Journal of Solid Mechanics
关键词
疲劳裂纹扩展
应力强度因子
mixed mode
fatigue crack growth
stress intensity factor
