Study on Springback of High Strength Bending Part Based on Numerical Simulation

Cracking,wrinkling and springback of high strength bending part by room temperature stamping can be effectively solved adopting hot stamping technology. Numerical simulation was conducted on the high strength bending part based on Dynaform,springback of part at room temperature and hot stamping analyzed,and effects of initial blank temperature and forming velocity on springback of the parts in hot stamping process studied. The results show that the forming part is defect free under the conditions of room temperature forming but the maximum springback amount is 1. 48 mm. Using the hot forming method, the springback of part is improved. The effect of initial blank temperature on the springback is complex. But the springback decreases with the increase of speed.