锻压技术

基于正交实验的门槛内板件拉延成形工艺参数优化

英文标题：Optimization on drawing parameters for automobile doorsill inner panel based on orthogonal test

作者：邓长勇谭伟田铁

分类号：TG386.1

出版年,卷(期):页码：2017,42(1):33-36

摘要：

针对某汽车门槛内板成形过程中易发生的起皱和破裂等缺陷，通过正交实验方法进行实验方案设计，并借助板料成形的有限元模拟软件Autoform进行工艺参数优化分析。实验中将拉延成形过程的压边力F、摩擦系数μ和成形时压机下行速度v作为优化因素，以最大起皱准则指标和最大减薄率作为评价目标。采用Design-Expert软件对正交实验结果进行优化处理，得到多目标优化，得出最优的参数组合为：压边力为1.3×106 N，摩擦系数为0.125和压机速度为15 mm·s-1。并采用实验进行验证，结果表明有限元模拟结果和实验基本吻合，表明正交实验和多目标优化可以有效地对板料成形进行优化。

For wrinkling and cracking in the drawing process of an automobile doorsill inner panel, the experimental scheme design was carried out by orthogonal test, and the parameters were optimized by the finite element simulation software Autoform. In the experiment, the blank hold force F, friction coefficient μ and press downward velocity of forming v were regarded as the optimization factors, and the maximum wrinkling criterion and the maximum thinning rate were regarded as the evaluation targets. Finally, the multi-objective optimization was realized, and the optimal parameters with blank hold force of 1.3×106 N, friction coefficient of 0.125 and press speed of 15 mm·s-1 were obtained by software Design-Expert to deal with orthogonal test results, and the simulation results were verified. The results show that the finite element simulation results are in well agreement with the experimental results, and the orthogonal test and the multi-objective optimization can be applied to optimize the drawing process.

基金项目：

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)

作者简介：邓长勇（1982-），男，硕士，副教授 E-mail：dengcy1982@163.com

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