管板孔开槽液压胀接接头性能的三维有限元分析(二)——管板孔槽的几何尺寸对接头紧密性的影响  

3-D Elastic and Plastic Analysis of Tube-to-Tubesheet Joints with One Groove(Ⅱ)

作　　者：于洪杰[1] 徐鸿[1] 钱才富[1] 

机构地区：[1]北京化工大学机电工程学院

出　　处：《压力容器》2001年第4期33-34,58,共3页Pressure Vessel Technology

基　　金：北京自然科学基金项目 (编号 :30 0 2 0 0 9)

摘　　要：在管板孔开槽的液压胀接接头中 ,开槽的几何尺寸 ,包括槽的宽度、深度及位置 ,对管子—管板孔界面上残余接触压力的分布有很大影响 ,因而对接头的紧密性和拉脱强度等重要性能具有很大影响。本文采用三维弹塑性有限元分析方法 ,研究了管子和管板材料都具有非线性应变硬化性质时 ,槽的宽度 ,深度以及位置对接头密封性能的影响 ;The geometry (width, depth and location) of the groove in the tubesheet hole has significant effect on the distribution of residual contact pressure on the interface of expanded joints, and therefore, will strongly affect the quality of the joint, especially its tightness and draw-off strength. In this paper, the effects of groove geometry on joint tightness are investigated using 3-D elastic-plastic finite element method, and considering the nonlinear strain-hardening effect of both tube and tubesheet materials. A comparison of joint tightness is also made between expanded joints with and without groove in the tubesheet hole.

关 键 词：液压胀接 管板孔开槽 密封环压力 有限元 

分 类 号：TH49[机械工程—机械制造及自动化]