焊管2016，Vol.39Issue(7)：1-6,10,7.DOI:10.19291/j.cnki.1001-3938.2016.07.001
双金属复合管液压成型的有限元模拟及残余接触压力计算
Finite Element Simulation and Residual Contact Pressure Calculation for Bimetal Composite Pipe Hydraulic Forming
摘要
Abstract
In the process of bimetal composite tube plastic hydraulic forming, it adopted the finite element common software ABAQUS to carry out elastic-plastic analysis on mechanical behavior, established the corresponding relation between different material composite pipe expanding tube pressure and the residual contact pressure. Through finite element simulation, it obtained the smallest forming tube expanding pressure in clearance elimination phase, the elastic limit expansion pressure and contact pressure, the tube expansion pressure and contact pressure of outside pipe when the yield occurred, the limit tube expanding pressure and contact pressure when the fully plastic deformation occurred in outside pipe, and the residual contact pressure after unloading. The results showed when the outside tube material is X65C, the residual contact pressure is 0 after inside and outside pipe unloading; when the outer tube material is L360QS, after unloading the residual contact pressure is 3.495 MPa, and tube expanding pressure 49.78 MPa in the elastic limit and plastic limit expansion pipe pressure is 54.6 MPa, the outer tube will appear plastic deformation. When expanding, it must control the expansion pipe pressure is less than the plastic limit pressure, otherwise, the outer tube will happen plastic flow, it is not allowed.关键词
双金属复合管/成型过程/有限元/最小胀管压力/残余接触压力Key words
bimetal composite pipe/forming process/finite element/the smallest tube expanding pressure/residual contact pressure分类
矿业与冶金引用本文复制引用
晁利宁,鲜林云,余晗,张晓峰..双金属复合管液压成型的有限元模拟及残余接触压力计算[J].焊管,2016,39(7):1-6,10,7.基金项目
国家高技术研究发展863计划 （）
