摘要
利用线弹性断裂力学对表面裂纹和浅埋裂纹的边界干涉效应进行考察,结果表明,在缺陷失效评定规范中,采用a/t≤0.7和p/a≤0.8来分别作为表面裂纹和浅埋裂纹的再表征指标是合适的,具有一定安全裕量。
The interaction effects of free bound for semi-elliptical crack and shallow embedded elliptical crack have been examined systematically by using linear-elastic and elastic-plastic fracture mechanics. The results illustrate that, in the flaws failure assessment code.it is suitable to adopt a/t<0. 7 and P/a<0. 8 as the norm of re-idealization of surface crack and shallow embedded crack respectively,and has appropriate allowance of safety.
出处
《压力容器》
1996年第1期17-22,共6页
Pressure Vessel Technology
