Transactions of Materials and Heat Treatment

Title：Stamping of two-seat electric vehicle roof

Authors： Huang Zupeng Wei Wei Jiang Mingzhou Luo Yong Zhang Feng Li Kaiwen Zhou Leyu

Unit： SAIC GM Wuling Automobile Co. Ltd. China Academy of Machinery Science and Technology Co. Ltd. Guilin Electrical Equipment Scientific Research Institute Co. Ltd. Guangxi Aisheng Creative Technology Co. Ltd.

KeyWords： electric vehicle roof common die shaping die concave surface wrinkle

ClassificationCode：TG386.3

year,vol(issue):pagenumber：2022,47(8):60-67

Abstract：

A kind of two-seat electric vehicle roof with complex shape features and its stamping method were introduced, and according to the characteristics of small batch and multi-variety for the vehicle, the goal of configuring a common die for various models of roof stamping die was proposed, and after analysis and comparison, the technical scheme of drawing die alone and subsequent OP20-OP40 shaping common was selected. Then, the roof material was tested, and a material parameter model was established. Furthermore, the roof formability was analyzed by numerical simulation method, and aiming at the problem of concave surface and wrinkle in the forming process, by increasing the pressure and adjusting the height of wrinkle-absorbing rib, the defects of concave surface and wrinkle of tail shaping were suppressed. The results show that the waist-type wrinkle-absorbing ribs with the height of 3 mm have the best effect. After several accurate CAE simulation analysis and corresponding adjustment, the material is fully formed, and the thinning rate, stress and strain meet the requirements.

Funds：

广西创新驱动发展专项课题（桂科AA18118040）；柳州市科技计划课题（2018AD50301）

作者简介：黄祖朋（1989-），男，博士，高级工程师，E-mail：zupeng.huang@sgmw.com.cn；通信作者：韦韡（1983-），男，博士，正高级工程师，E-mail：wei6.wei@sgmw.com.cn

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