Transactions of Materials and Heat Treatment

Title：Automobile fender forming based on variable blank holder force

Authors： Cao Chuanjian Cao Aixia Song Hui Liu Na Zhong Peisi

Unit： Qingdao Huanghai College Shandong University of Science and Technology

KeyWords： automobile fender variable blank holder force (VBHF) constant blank holder force drawing stamping crack

ClassificationCode：TG386.1

year,vol(issue):pagenumber：2016,41(10):149-151

Abstract：

The forming process of automobile fender was researched by variable blank holder force (VBHF), and the forming process was simulated by Dynaform. The simulation results show that the parts are slightly crack under constant blank holder force, which can not meet the requirements of forming. Therefore, the variable blank holder force loading method was used to carry out the research. The forming effect was simulated under six load methods of VBHF, and the optimal loading mode was obtained so as to improve the forming effect greatly. Furthermore, the feasibility of VBHF forming was verified by comparing experiment result with simulated analysis result. Finally, the maximum thinning rate was 25.0% and the maximum thickening rate was 8.0%, and the overall forming quality was better and satisfied the requirement of forming. The results prove that the loading way of VBHF can improve the forming effect.

Funds：

山东省自然科学基金资助项目（ZR2015EM042）

作者简介：曹传剑（1984-），男，硕士，讲师 E-mail：caochuanjian1008@163.com

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