Numerical Simulation and Experimental Investigation of Springback in U-Channel Forming of Tailor Rolled Blank  

作　　者：ZHANG Hua-wei 1 , LIU Li-zhong 1 , HU Ping 1 , LIU Xiang-hua 2 ( 1.Faculty of Vehicle Engineering and Mechanics , State Key Laboratory of Structural Analysis for Industrial Equipment , Dalian University of Technology , Dalian 116024 , Liaoning , China  2.Research Institute of Science and Technology , Northeastern University , Shenyang 110819 , Liaoning , China ) 

出　　处：《Journal of Iron and Steel Research International》2012年第9期8-12,共5页

基　　金：Item Sponsored by National Natural Science Foundation of China ( 10932003 , 50974039 , 50872126 );National Basic Research Program of China ( 2010CB832700 );Fundamental Research Funds for Central Universities of China ( 893324 , DUT11ZD202 )

摘　　要：In order to grasp the springback rule of TRB ( tailor rolled blank ) parts after forming , the springback behavior of TRB was investigated by integrating such three means as theoretical research , numerical simulation and stamping experiments.Fundamental theories of springback were analyzed.The stamping and springback processes of annealed 1.2 / 2.0mm TRB , 1.2mm and 2.0mm plates for U-channel were simulated , and the simulation results were compared with the experiments.The results indicate that the springback of TRB falls in between those of the 1.2mm and 2.0mm plates.It is desirable for the TRB U-channel to have die clearance of 1.1times maximum blank thickness and friction coefficient of about 0.12 , and longer thickness transition zone is preferable.The simulation data demonstrate reasonably good agreement with the experiments.In order to grasp the springback rule of TRB ( tailor rolled blank ) parts after forming , the springback behavior of TRB was investigated by integrating such three means as theoretical research , numerical simulation and stamping experiments.Fundamental theories of springback were analyzed.The stamping and springback processes of annealed 1.2 / 2.0mm TRB , 1.2mm and 2.0mm plates for U-channel were simulated , and the simulation results were compared with the experiments.The results indicate that the springback of TRB falls in between those of the 1.2mm and 2.0mm plates.It is desirable for the TRB U-channel to have die clearance of 1.1times maximum blank thickness and friction coefficient of about 0.12 , and longer thickness transition zone is preferable.The simulation data demonstrate reasonably good agreement with the experiments.

关 键 词：tailor rolled blank U-CHANNEL SPRINGBACK ANNEALING 

分 类 号：TG335[金属学及工艺—金属压力加工]