摘要
本文提出了在轴向力、弯矩、扭转及内压联合载荷作用下含周向裂纹管塑性破坏载荷的力学模型。按ＶｏｎＭｉｓｅｓ准则可确定塑性跨塌时净截面上诸正应力值，进一步又给出了各种裂纹管道（诸如表面裂纹、穿透裂纹等）的诸塑性极限载荷表达式。本文对缺陷评定十分有用。
Abstract The mechanic model of plastic collapse load for circumferentially cracked pipes under the combined loads of axial force,bending moment,torsion and internal pressure was put forward.According to the Von Mises criterion the normal stresses on the net section in the plastic collapse condition are developed and then the general collapse load equations were obtained.Under the different combined loads,the limit load equations for different cracked pipes such as surface crack,through-wall crack etc.are presented.This paper is very useful for defect assessment.
出处
《压力容器》
1999年第2期1-7,39,共8页
Pressure Vessel Technology
基金
国家"九五"科技攻关项目
