双层管液压胀合的原理及力学分析  

PRINCIPLE AND MECHANICS ANALYSIS FOR BIMETALLIC TUBE FORMED BY HYDRAULIC EXPANSION

作　　者：刘富君[1] 郑津洋[1] 郭小联[2] 朱国辉[1] 徐铭泽[3] 

机构地区：[1]浙江大学化工机械研究所,杭州310027 [2]大庆石油管理局热力公司,大庆163253 [3]ARC压力容器有限公司,上海201600

出　　处：《机械强度》2006年第1期99-103,共5页Journal of Mechanical Strength

基　　金：教育部高等学校博士学科点专项基金(20010335032)资助~~

摘　　要：详细阐述双层管的液压胀合原理。根据对双层管分析的基本假设,研究双层管液压胀合过程中的受力状态。采用弹塑性理论,对双层管内管及外管的应力应变关系进行讨论,并利用内外管周向应变的变形协调条件,得出液压胀合的适用条件以及胀合液压力pi与残余接触压力p间的计算关联式。The hydro-expanding principle of bimetallic tube was expounded in detail. According to fundamental assumptions, the forcing state of bimetaUic tube was analyzed during the process of hydro-forming. Based on elasticity-plasticity theory, the stress and strain for inner and outer tubes of bimetallic tube were discussed. By using the relation of deformed compatibility of hoop strain, varying range of hydro-expanding pressures and the calculating formulas of hydro-expanding pressure related to residual contact pressure are derived.

关 键 词：双层管 胀合液压力 应力分析 周向应变 

分 类 号：TE832[石油与天然气工程—油气储运工程] TH123.4[机械工程—机械设计及理论]