Abstract
Based on the principle of hot stamping, a simulation model of hot stamping is proposed. The blank contour line of U-shaped part is optimized by using a multiple iterative algorithm. By comparison of the simulated and experimental data, the multiple iterative optimization algorithm is verified. Moreover, the blank contour lines of a bumper and the B-pillar of Numisheet 2008 were optimized. The results obtained indicate that the multiple iterative method for optimizing the initial blank contour line has high calculating speed and accuracy. The hot stamping part contour lines match the ideal part contour lines quite well.
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