管板孔开槽液压胀接接头性能的三维有限元分析(一)——管板孔开槽时液压胀接接头处的等效应力及残余接触压力的分布  

3-D Elastic and Plastic FEM Analysis of Hydraulically Expanded Tube-to-Tubesheet Joints with Tubesheet Hole Groove (Ⅰ) The Effect of Expansion Pressure on Equivalent Stress and Residual Contact Pressure

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3期39-44,共6页Pressure Vessel Technology

基　　金：北京市自然科学基金项目! (编号 30 0 2 0 0 9)

摘　　要：采用三维弹塑性有限元方法对换热器管板孔开槽的液压胀接接头进行分析 ,研究了管子和管板材料都具有非线性应变硬化性质时 ,胀接接头处的等效应力和管子—管板之间接触压力与残余接触压力的分布状况 。In this paper, a 3-D finite element model was established to analyze the hydraulically expanded joints with one groove in each tubesheet hole. The effects of the groove on the residual contact pressure and tightness of the joints were studied considering the strain-hardening properties of materials. The distributions of equivalent stress , contact pressure , residual contact pressure, as well as the change of contact pressure and residual contact pressure with expansion pressure were also investigated.

关 键 词：液压胀接接头 有限元分析 胀接压力 残余接触压力 等效应力 换热器 

分 类 号：TK172[动力工程及工程热物理—热能工程]