Numerical simulation on the process of multi-point forming for tube

LiuQiQian, FU Wen-zhi, LI Ming-zhe, CHEN Zhi-hong

Roll-forging Research Institute,Jilin University,Changchun 130025,China



Abstract:

To apply the multi-point forming technology to the field of tube processing,the process of multi-point forming for tube is studied.Numerical simulation for the process of multi-point forming for tube is achieved by using elastic-plastic FEM in ABAQUS.During simulation,reasonable coefficient of mass scaling and friction model of penalty function are used.The influence of several major technological parameters on the process is analyzed.When the tube diameter is 60 mm and the forming curvature radius is 1000 mm,the distortion rate of cross-section and the absolute forming error gradually decrease with the increasing of tube wall thickness;However,when the tube wall thickness is constant,the smaller the curvature radius,the larger the distortion rate of cross-section,but as to forming part,its absolute forming error becomes smaller.

Key words:  tube-bending  multi-point forming  numerical simulation  technological parameter

DOI：10.11916/j.issn.1005-9113.2010.06.022

Clc Number:TG386

Fund: