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前中央通道延伸板起皱分析与优化
英文标题:Analysis and optimization on wrinkling of extension plate in front central channel
作者:衣杰栋  陈炜  王天豪  彭卫华 
单位:(1.江苏大学 机械工程学院  江苏 镇江 212013  2.江苏宝锐汽车部件有限公司  江苏 丹阳 212300) 
关键词:前中央通道延伸板  压边力  拉延筋系数  冲压成形  起皱 回弹 
分类号:TG386
出版年,卷(期):页码:2019,44(2):25-30
摘要:

 以某车型前中央通道延伸板为研究对象,分析其冲压成形工艺,利用Autoform建立有限元模型,对其成形过程中可能出现的开裂、起皱、回弹等缺陷进行预测,分析产生缺陷的原因并给出相应的优化方案。结果表明,通过调节压边力至800 kN、增加工艺补充造型和修改拉延筋系数至0.3,成功地消除了起皱缺陷;通过回弹仿真预测,发现回弹值在可控范围之内。最后进行实冲试验验证,其试模结果与CAE预测结果基本保持一致,表明了前期有限元分析和优化方案的有效性。利用优化后的方案指导生产,保证了产品的成形质量。

 For the extension plate in front central channel of a car,the stamping process was analyzed. Then, the defects such as cracking, wrinkling and springback etc. during the forming process were predicted by the FE model established with Autoform software, and the causes of the defects were analyzed and the corresponding optimization scheme was given. The results show that the wrinkle defects are successfully eliminated by adjusting the blank holder force to 800 kN, adding the process supplementary molding and modifying the drawbead coefficient to 0.3. It is found that the springback value is within the controllable range through the simulation prediction of springback. Finally, the actual stamping test was carried out, and the test results are basically consistent with the predicted results, which indicates that the finite element analysis and optimization scheme in the early stage are effective, and the quality of product can be guaranteed by the optimized solution to guide production.

基金项目:
基金项目:高等学校博士学科点专项科研基金资助项目(20133227110013)
作者简介:
作者简介:衣杰栋 (1990-), 男, 硕士研究生 Email:978953239@qq.com 通讯作者:陈炜(1965-), 男, 博士, 教授 Email:315157645@qq.com
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