Numerical Investigation for Formability of Aluminum 6016 Alloy under Non-isothermal Warm Forming Process
The warm forming technology of aluminum alloy has attracted attention from worldwide automotive engineering sector in recent years,with which the complex geometry parts can be realized at elevated temperature.A non-isothermal warm forming process for the heat treatable aluminum can quickly carry out its application on traditional production line by adding a furnace to heat up the aluminum alloy sheet.The 6000 aluminum alloy was investigated by numerical simulation and experiment using the Nakajima test model in this paper.A modified Fields-Backofen model was introduced into numerical simulation process to describe the thermo-mechanical flow behavior of a 6000 series aluminum alloy.The experimental data was obtained by conducting thermal-mechanical uniaxial tensile experiment in temperatures range of 25~400℃to guarantee the numerical simulation more accurate.The numerical simulation was implemented with LS_DYNA software in terms of coupled dynamic explicit method for investigating the effect of initial forming temperature and the Binder Holder Force (BHF),which are critical process parameters in non-isothermal warm forming.The results showed that the optimal initial forming temperature range was 300℃~350℃.By means of conducting numerical simulation in deep drawing box model,the forming window of BHF and temperature around the optimal initial forming temperature (275℃,300℃ and 325℃) are investigated,which can provide guidance to actual experiment.
Warm Forming 6000 Aluminum Alloy Non-isothermal Isotropic explicit Model FEM Simulation
P.Hu M.H.Dai L.Ying D.Y.Shi K.M.Zhao J.D.Lu
School of Automotive Engineering,Faculty of Vehicle Engineering and Mechanics,State Key Laboratory o School of Automotive Engineering,Faculty of Vehicle Engineering and Mechanics,State Key Laboratory o Department of Engineering Mechanics,Faculty of Vehicle Engineering and Mechanics,State Key Laborator
国际会议
沈阳
英文
464-470
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）