Multi-Stage FE Simulation of Hot Ring Rolling
As a unique and important member of the metal forming family,ring rolling provides a cost effective process route to manufacture seamless rings.Applications of ring rolling cover a wide range of products in aerospace,automotive and civil engineering industries 1.Above the recrystallization temperature of the material,hot ring rolling begins with the upsetting of the billet cut from raw stock.Next a punch pierces the hot upset billet to form a hole through the billet.This billet,referred to as preform,is then rolled by the ring rolling mill.For an accurate simulation of hot ring rolling,it is crucial to include the deformations,stresses and strains from the upsetting and piercing process as initial conditions for the rolling stage.In this work,multi-stage FE simulations of hot ring rolling process were performed by mapping the local deformation state of the workpiece from one step to the next one.The simulations of upsetting and piercing stages were carried out by 2D axisymmetric models using adaptive remeshing and element erosion.The workpiece for the ring rolling stage was subsequently obtained after performing a 2D to 3D mapping.The commercial FE package LS-DYNA was used for the study and user defined subroutines were implemented to complete the control algorithm.The simulation results were analyzed and also compared with those from the single-stage FE model of hot ring rolling.
Hot ring Rolling Preform Multi-stage FE Simulations Mapping
C.Wang H.J.M.Geijselaers A.H.van den Boogaard
Materials innovation institute(M2i),Delft,the Netherlands University of Twente,Section of Applied Mechanics,Enschede,the Netherlands
国际会议
沈阳
英文
1014-1019
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）