Transactions of Materials and Heat Treatment

Title：Numerical simulation and process optimization on fender forming

Authors： Jiang Lei Ma Peibing Wang Long Li Guowei

Unit： Dongfeng Honda Automobile Co. Ltd.

KeyWords： fender stamping process slide of skid line for major ridge process addendum crack wrinkle springback

ClassificationCode：U466; TG386

year,vol(issue):pagenumber：2021,46(11):113-123

Abstract：

For the automobile fender, based on the characteristics of complex shape, large curvature variation and high appearance quality requirements etc., a four-step stamping process was designed. Then, the forming process scheme of fender was simulated by software AutoForm, and the potential defects such as major ridgeline slip, cracking at the bottom fillet of bumper fitting area, wrinkle at the wall of bumper fitting area, large springback of hood joint area flange during the whole forming process were identified. Furthermore, the main ridgeline slip was improved by adjusting stamping direction and blank holder surface, the cracking was solved by increasing the fillet radius of cracked area, the wrinkles were reduced by optimizing the process addendum, and the reverse compensation design was conducted on the area with excessive springback to reduce the springback by software CATIA. The results show that after the optimization of the forming process scheme, no defects such as slippage, cracking, wrinkling and so on, occur during the forming process of fender, and the amount of springback is controlled within the acceptable range, which is consistent with the numerical simulation results to prove the reliability of the numerical simulation.

Funds：

国家自然科学基金面上项目(51775397, 51975439)；教育部创新团队发展计划(IRT17R83, IRT13087)

作者简介：蒋磊（1987-），男，学士，工程师，E-mail：648213973@qq.com；通信作者：王龙（1976-），男，学士，高级工程师，E-mail：wanglong@wdhac.com.cn

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