基于正交实验的门槛内板件拉延成形工艺参数优化

发布时间：2019-03-15 08:14

【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1.3×106N,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。
[Abstract]:Aimed at the defects such as wrinkling and cracking in the forming process of an automobile threshold inner plate, the experimental scheme was designed by orthogonal experiment method, and the optimization analysis of process parameters was carried out with the help of the finite element simulation software Autoform of sheet metal forming. In the experiment, the blank holder force F, friction coefficient 渭 and press downlink velocity v of drawing forming process are taken as the optimization factors, and the maximum wrinkling criterion and the maximum thinning rate are taken as the evaluation targets. The orthogonal experiment results are optimized by Design-Expert software, and the optimum parameters are obtained as follows: blank holder force is 1.3x106N, friction coefficient is 0.125 and press speed is 15 mm 路s-1.1.The optimum parameters are as follows: blank holder force is 1.3x106N, friction coefficient is 0.125 and press speed is 15 mm 路s-1. The experimental results show that the finite element simulation results are basically in agreement with the experimental results, indicating that the orthogonal experiment and multi-objective optimization can effectively optimize the sheet metal forming.
【作者单位】：重庆广播电视大学汽车工程学院;重庆理工大学汽车零部件先进制造技术教育部重点实验室;吉林大学汽车工程学院;
【基金】：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-jfzh X0027)
【分类号】：TG386.1

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