复杂载荷下无缺陷弯管的塑性极限载荷  

Plastic Collapse Load Analysis of Undefected Pipe Elbows under the Complex Loads

作　　者：郭茶秀[1] 王学生[1] 王定标[1] 李培宁[2] 

机构地区：[1]郑州大学化工学院 [2]华东理工大学

出　　处：《压力容器》2001年第4期8-11,共4页Pressure Vessel Technology

基　　金：博士点基金资助项目

摘　　要：利用Von -Mises屈服准则 ,推导出内压和扭矩联合载荷以及内压、弯矩、扭矩联合载荷作用下弯管的塑性极限载荷方程式 ,经过简化后可得到任一单个载荷、两个或三个载荷共同作用下的塑性极限载荷。有关实验验证了理论的正确。本文为充分挖掘弯管的塑性极限承载能力提供了理论依据 。Based on Von-Mises yield condition, the plastic collapse equations for the pipe elbows under the loads of internal pressure and torsion, and the loads of internal pressure, bending and torsion are derived. By simplified, several different plastic collapse loads such as plastic limit bending can be got. Some experiments have verified the theories. The theoretical bases have been provided to fully utilize its plastic limit capability, and a fundamental method of plastic collapse load for defected elbows is also made.

关 键 词：弯管 塑性极限载荷 内压 扭矩 弯矩 化工管道 

分 类 号：TQ055.81[化学工程] O344.5[理学—固体力学]