Simulation of Shape Distortions During Flat Bottom Raising Process with Titanium Alloy Sheet Based on ADINA

摘要：

Titanium Alloy Sheet Based on ADINA ZHANG Ling-yun a , HAN Zhi-ren b , ZHAO Chang-bao c (Key Lab of Liaoning Province on Digital Process Simulation and Testing Technology, Shenyang Aerospace University ，Shenyang 110136, China) a [e-mail], b [e-mail], c [e-mail] Raising processes of titanium alloy sheets TC1M δ 1.45 were simulated based on ADINA FEA software. The shape distortions induced by plastic anisotropy during forming and springback processes were described. A series of forming tests were conducted for the comparison of simulation prediction and test measurements. Reasonable agreement was obtained between the predicted and measured profiles of formed parts ，It shows that the ADINA software is suitable for the analysis of the forming and springback processes of anisotropic titanium alloy sheets. Two sorts of shape distortion phenomena exhibit in the raised workpieces fabricated in room temperature after springback or elastic recovery process: Firstly, the bottom of the flange in the specimen distorts to be a wavy surface and not a plane. There two high points and two low points, and the high points locate in the flange periphery along the transverse direction(TD), and the low points locate in the periphery along the rolling direction(RD); Secondly, the top surface of the raising specimen distorts to be a wavy surface too, and the distortion shape is similar to that in the flange. During thermoforming at 600 ,℃ the elastic recovery can be suppressed effectively and the shape distortion resulted from springback processes can be eliminated, but the anisotropy characteristics of the titanium alloy sheets can not be changed, so forming at high temperature can not solve all the shape distortion problems except the distortion occurred for the reason of springback, unhomogeneous deformation in thickness still exists.

作者: ZHANG Ling-yun HAN Zhi-ren ZHAO Chang-bao

作者单位: Key Lab of Liaoning Province on Digital Process Simulation and Testing Technology,Shenyang Aerospace Key Lab of Liaoning Province on Digital Process Simulation and Testing Technology, Shenyang Aerospac

会议类型: 国际会议

会议名称: The 6th International Conference on Physical and Numerical Simulation of Materials Processing(第六届材料与热加工物理模拟及数值模拟国际学术会议 ICPNS 2010)

会议地点: 桂林

会议语种:英文

页码: 1-4

在线出版日期: 2010-11-16（万方平台首次上网日期，不代表论文的发表时间）