Transactions of Materials and Heat Treatment

Title：Springback simulation and compensation of car roof stamping based on Dynaform

Authors： Li Qihan Liu Haijing Li Xiaomei Wang Hongqiang Zhu Pei Hou Jianwen

Unit： Changchun University of Technology

KeyWords： car roof drawbead springback springback compensation

ClassificationCode：

year,vol(issue):pagenumber：2015,40(10):16-19

Abstract：

To solve the direct affects of springback on the forming quality and dimensional accuracy of stamping parts, the stamping process and springback of a car roof were numerically simulated by CAE analysis software Dynaform. The simulation results show that the setting of drawbead has an important influence on car roof forming quality, and the springback of the most serious area decreases by 40.73% through setting the variable drawbead. The optimization of springback compensation on the roof is carried out by the springback compensation function of the SCP for three times. After comparing the compensated deviation, the springback is effectively controlled within 2 mm. The springback problem is further controlled, and the desirable forming results are obtained. As a result, the correctness and practicability of the results are verified by the experiment, and the design time of the die is saved.

Funds：

吉林省省级经济结构战略调整引导资金专项项目(20141131)

李奇涵（1970-），男，博士，教授

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