Transactions of Materials and Heat Treatment

Title：Optimization on process parameters for outer panel of a new energy vehicle

Authors： Deng Changyong Tan Wei Tian Tie

Unit： Chongqing Radio & TV University Chongqing University of Technology Jilin University

KeyWords： new energy vehicle outer panel of vehicle numerical simulation friction coefficient blank hold force wrinkle

ClassificationCode：TG386.1

year,vol(issue):pagenumber：2017,42(8):38-41

Abstract：

For the defects of wrinkling, rupture and inadequate forming produced in the forming process for the outer panel of a new energy vehicle, experience design was conducted by Design-Expert software and finite element simulation software AutoForm. Then, friction coefficient μ, press down speed v and blank hold force Fb were set as influence factors, and the maximum thinning rate, the maximum thickening rate and the forming defect ratio were used as the target. Therefore, the process parameters were optimized. Furthermore, the optimal parameter combination was obtained by multi-objective optimization with μ=0.15, v=10 mm·s-1, Fb=1.6×103 kN. Finally, the test mode was verified, and parts without crack and wrinkle defects are formed fully. Thus, the proposed method can provide reference for the development of vehicle outer panel parts effectively.

Funds：

重庆市科委商用车变速器协同创新与关键技术攻关项目(cstc2012jcsf-jfzhX0027)；重庆市高等学校青年骨干教师项目 (No.2016-46)

邓长勇（1982-），男，硕士，副教授

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