Transactions of Materials and Heat Treatment

Title：Simulation analysis and optimization on stamping process for automobile engine hood based on orthogonal experiment

Authors： Chen Wenqiang Liang Fazhou Leng Wenjie Zhang Yikun

Unit： Department of Aeronautical Manufacturing and Engineering Science and Technology College of Nanchang Hangkong University

KeyWords： automobile engine hood stamping process Autoform thinning rate orthogonal experiment

ClassificationCode：TG386

year,vol(issue):pagenumber：2025,50(2):46-52

Abstract：

In order to improve the efficiency of vehicle development, taking the automobile engine hood cover as the research object, the influence laws of blank holder force, die clearance and stamping rate on the forming of cover were studied by using the finite element analysis software Autoform. Firstly, the structural characteristics of automobile engine hood were analyzed, and the stamping process route involving drawing, trimming, flanging (first flanging-second flanging) was determined. Secondly, taking the maximum thinning rate of material as the index parameter of the excellent process, based on the orthogonal experiment, the dangerous positions during the part forming process were analyzed,

and the order of the influence degree of each factor on the forming quality was determined as follows:blank holder force > die clearance > stamping rate. Finally, through simulation and experimental verification, the optimal combination of process parameters were obtained, with the blank holder force being 1800 kN, the die clearance being 1.00 mm, the stamping rate being 4000 mm·s-1, which provides a theoretical basis for the actual production and could effectively shorten the production cycle of parts.

Funds：

江西省教育厅科学研究项目（GJJ2204313）；江西省大学生创新创业计划项目（20241343303）

作者简介：陈文强（2002-），男，本科生,E-mail：cwqann@163.com;通信作者：梁发周（1975-），男，硕士，副教授,E-mail：471057336@qq.com

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