Transactions of Materials and Heat Treatment

Title：Multi-objective optimization on forming the automobile hood inner panel

Authors： Qiang Jun

Unit： Chongqing Creation Vocational College

KeyWords： automobile hood inner panel multi-objective optimization stamping numerical simulation orthogonal test

ClassificationCode：

year,vol(issue):pagenumber：2016,41(4):41-44

Abstract：

For an automobile hood inner panel，the addendum surface and binder surface were designed by a three-dimensional software, and parameters in stamping forming process were analyzed and optimized by numerical simulation software. Firstly, the reasonable simulation result was found by single factor variable method. Then, three factors of blank holder force, press speed and friction factor during the drawing process were designed by orthogonal experiment method，and the value range of each factor was determined by the single factor experiment. Three factors, including the maximum thinning ratio, maximum thickening ratio and wrinkling trend, were considered in the quality control of the part. The maximum thinning ratio and maximum thickening ratio were obtained through the post-processing of software; the evaluation of wrinkling trend was calculated by wrinkling function. The optimized parameters obtained by multi-objective optimization were blank holder force 1.4×106 N, press speed 20 mm·s-1, and friction coefficient 0.15 respectively. The attual experiment was conducted based on the above parameters,the results show that the sheet inflow of parts are in accordance with the simulation results.

Funds：

重庆市教委2015年度科学技术研究项目(KJ1505301)

强军（1972-），女，本科，讲师

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