带裂纹压力管道安全评定的应力强度因子曲线  

Stress intensity factor curves for safe assessment of periodic cracks in pressured pipes

作　　者：孔令超[1] 

机构地区：[1]上海应用技术学院机械与自动化工程学院,上海200235

出　　处：《机械设计与制造》2008年第12期78-79,共2页Machinery Design & Manufacture

摘　　要：根据压力管道安全评定的工程需要,给出了管道周期环向裂纹应力强度因子通用曲线。通过管道裂纹角和周期裂纹数,就可在曲线上查得正则化应力强度因子。类似的曲线可以根据管道的特点给出多条,便于工程应用。A curve of stress intensity factors of circumferential periodic cracks in pipes was pro-posed for safe assessment.According to crack angle and number,a normalized stress intensity factor could be shown in the curve.The similar general curves could be proposed on characters of pipes to get easily stress intensity factors in engineering application.

关 键 词：安全评定 应力强度因子 裂纹管道 G＊积分 

分 类 号：TH16[机械工程—机械制造及自动化] O346.1[理学—固体力学]