锻压技术

基于中心复合试验的汽车覆盖件成形工艺参数优化

英文标题：Technological parameters optimization of automobile panel forming based on central composite test

作者：夏江梅1 张黎1 文琍2

分类号：

出版年,卷(期):页码：2016,41(7):15-18

摘要：

针对某车型的前隔板冲压件拉延成形出现的破裂缺陷，提出了采用中心复合试验对拉延筋阻力系数进行优化。在板料成形分析软件AutoForm中建立该零件拉延成形的有限元模型，对其进行单因素实验模拟，确定了各段拉延筋的大致取值范围。采用中心复合试验对考虑的因素进行实验设计，并采用有限元软件对所有实验组进行模拟。以最大减薄率和最大增厚率为优化目标建立多目标优化函数，利用Design-Expert试验设计软件求解得最优的拉延筋阻力系数分别为：A=0.25，B=0.45，C=0.30和D=0.30。对最优组参数组进行实验验证，实验结果表明，本文提出的方法能够有效地提高拉延件的成形质量。

For the fracture of front clapboard stamping parts of an automobile during drawing forming, the drawbead resistance coefficients were optimized by central composite test method. The finite element model of the products was built by AutoForm software, a single factor simulation was conducted and the approximate range of each section of drawbead was determined. The experiments of the factors were designed by central composite tests, and all the experiment groups were simulated by the finite element software. The maximum thinning ratio and the maximum thickening ratio were taken as the optimization objective. The optimal combinations of the drawbead resistance coefficients were A=0.25, B=0.45, C=0.30 and D=0.30 respectively by the Design-Expert software. The optimal parameter combinations were verified by the experiment, and the experimental results show that the proposed method can effectively improve the forming quality of drawing parts.

基金项目：

重庆市教委资助项目(0637335)

夏江梅（1966-），女，硕士，副教授

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