Rigid plastic FEM model of fast solution to strip rolling
The influence of compile method, elements number, compressible parameter, friction factor and convergent criteria were investigated on rolling force, iteration steps and computational time based on compressible rigid plastic FEM. The rigid plastic FEM model of fast solution to strip rolling was proposed in the paper. Compile method and compressible parameter have less influence on calculated rolling force. The iteration steps are reduced and computational efficiency is improved greatly with compile method of release and compressible parameters 0.01. The change of calculated results becomes less but iteration steps become more and more with the increment of elements number. Both accuracy and efficiency is satisfying with the change of elements number from 50 to 200. Relaxing the convergence criterion is helpful to improve the computing speed on the premise of guarantee of accuracy. Much larger or smaller friction factors increase the iteration steps. The hot strip rolling processes from a certain plant was solved with the developed program FFEM-2D by FORTRAN. The calculated results have a good agreement with the measured value. The iteration steps change from 14 to 36 and computational time is less than 200ms for solution to one pass rolling. The accuracy is satisfying and computational time fully meets the basic requirements of FEM online application.
R B MEI C S LI X H LIU L Bao
Northeastern University at Qinhuangdao Branch.Northeastern University, Qinhuangdao 066004, China Sta State Key Laboratory of Rolling and Automation.Northeastern University, Shenyang 110004,China Northeastern University at Qinhuangdao Branch.Northeastern University, Qinhuangdao 066004,China
国际会议
桂林
英文
1-6
2010-11-16（万方平台首次上网日期，不代表论文的发表时间）