Transactions of Materials and Heat Treatment

Title：Research on springback of tailor-welded blank for automobile panel

Authors： Yin Zuohu Liu Kai Yu Jixing Tian Yan Hu Mingzhi

Unit： Wuhan University of Technology

KeyWords： tailor-welded blank middle channel springback

ClassificationCode：TG386

year,vol(issue):pagenumber：2016,41(2):39-44

Abstract：

For the middle channel of automobile panel produced by tailor-welded blanks with different thicknesses, the forming process was simulated by software Dynaform based on its structure to analyze the process, and the preliminary results were obtained by setting up corresponding parameters in the pre-process. Furthermore, it was optimized the parameters and simulated the springback process, and the influences of different drawbead arrangement, BHF, and thickness ratio of TWBs on the springback were analyzed. The results show that the springback value of 1.839 mm is gained with drawbead height of 4 mm，BHF of 700 kN and thickness ratio of 0.5, and accords with production requirement that lower that the experienced springback value 2 mm. Finally, comparing the simulation springback value with that of the actual production, it is found that the top surface springback is the closest to the actual data, but the experimental springback values of both the side wall and the flange portion are obvious different from that of the actual data.

Funds：

湖北省自然科学基金资助项目（2015CFB167)

尹作虎（1990-），男，硕士研究生刘凯(1987-)，男，博士，副教授

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