Abstract
In order to grasp the springbaek rule of TRB (tailor rolled blank) parts after forming, the springbaek behavior of TRB was investigated by integrating such three means as theoretical research, numerical simulation and stamping experiments. Fundamental theories of springbaek were analyzed. The stamping and springbaek processes of annealed 1. 2/2. 0 mm TRB, 1. 2 mm and 2. 0 mm plates for U-channel were simulated, and the simulation results were compared with the experiments. The results indicate that the springbaek of TRB falls in between those of the 1. 2 mm and 2. 0 mm plates. It is desirable for the TRB U-channel to have die clearance of 1. 1 times 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.
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Foundation Item: 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)
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Zhang, Hw., Liu, Lz., Hu, P. et al. Numerical Simulation and Experimental Investigation of Springbaek in U-Channel Forming of Tailor Rolled Blank. J. Iron Steel Res. Int. 19, 8–12 (2012). https://doi.org/10.1016/S1006-706X(13)60002-3
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DOI: https://doi.org/10.1016/S1006-706X(13)60002-3