第42卷第4期 Vol. 42No.4
假压技
FORGING & STAMPING TECHNOLOGY
车身零件拉延成形缺陷控制和工艺参数优化
支姝，衣玉兰
（新疆交通职业技术学院汽车工程学院，新疆乌鲁木齐831401）
2017年4月 Apr.2017
摘要：起皱和拉裂缺陷是汽车车身零件在拉延成形中常见的成形缺陷。为了控制拉延成形缺陷，以某汽车发动机盖内板件为研究对象，通过Autofom建立有限元模型，并借助Design-Expert进行实验设计。采用数值模拟软件和实验设计方法对汽车发动机盖内板件的拉延筋阻力系数和压边力参数进行优化。优化后的最优参数组合为：拉延筋的阻力系数大小分别为4=0.3， B=0.3，C=0.4，压边力大小D=1.25×10°kN。采用优化后的参数进行实验，实验得到零件无拉裂和起皱缺陷，表明本文采用的方法可以有效地控制车身零件拉延成形中的缺陷。
关键词：拉延；成形缺陷：拉延筋阻力系数：压边力；AutoForm；Design-Expert DOI: 10. 13330/j. issn. 1000-3940. 2017. 04. 007
中图分类号：TG386.1
文献标识码：A
文章编号：1000-3940（2017）04-0039-04
Defectcontrolandprocessparametersoptimizationondrawingprocessof
automotivepanel Zhi Shu, Yi Yulan
( College of Automotive Engineering, Xinjiang Vocational & Technical College of Communications, Urumqi 831401 , China)
Abstract : Crackle and wrinkle are the common defects in the drawing process of automotive panel parts. In order to control the defects in the drawing process, for an automotive engine cover panel, the finite element model was set up by Autoforn sofiware, and the experimen-tal design was carried out by Design Expert software. The resistance coefficient of drawbeads and parameters of blank holder force for au-tomotive engine cover panel were optimized by the numerical simulation software and the experiment design method. The optimized param-eters are as following: the resistance coefficient of drawbeads are A =0. 3, B = 0. 3, C = 0. 4, and the blank holder force is D = 1. 25 x 1o’ kN. Furthermore, the optimized parameters were verified in test, and the forming parts were obtained without crackle and wrinkle de-fects. Thus, this method can effectively control the foming defects in the drawing process of autonotive panel parts.
Key words : drawing: forming defects; resistance coefficient of drawbeads ; blank holder force; AutoForm; Design Expert
汽车产业的发展在某种程度上直接反映了一个收稿日期：20170119；修订日期：20170228
基金项目：新疆维吾尔自治区高校科研计划项目（XJEDU2015S070）
作者简介：支妹（1982-），女，硕士，讲师 E-mail: zhishuxjt@ 163. com
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