锻压技术

基于Dynaform灰斗车拉深成形响应面优化分析

英文标题：Response surface optimization analysis on gray hopper deep drawing based on Dynaform

作者：刘尚保龚红英尤晋施为钟廖泽亮廖泽寰

分类号：TG386

出版年,卷(期):页码：2022,47(7):86-94

摘要：

针对灰斗车拉深成形过程中产生的缺陷问题，基于图像方法对试样进行单向拉伸试验，获得材料真实力学性能参数。借助Dynaform软件对成形过程进行数值模拟，以冲压速度v、压边力F和摩擦因数C作为影响板料成形质量的因素，以最大减薄率y1和最大增厚率y2作为优化目标，采用Box-Behnken（BBD）设计响应面试验，建立工艺参数与y1、y2之间的二次多项式响应目标函数，得到影响灰斗车拉深成形质量的最优工艺参数组合。最后，通过数值模拟及实际生产进行验证，试验结果表明，该方案有效提高了灰斗车零件的成形质量，消除了灰斗车成形缺陷，为此类拉深件的缺陷优化提供了有效参考。

For the defect problem in deep drawing process of gray hopper, the unidirectional tensile experiment of specimens was carried out based on image method, and the real mechanical property parameters of material were obtained. Then, the forming process was numerically simulated by software Dynaform. Furthermore, taking stamping speed V, blank holding force F and friction factor C as the factors affecting the forming quality of sheet metal, and taking the maximum thinning rate y1 and the maximum thickening rate y2 as the optimization objectives, the response surface method (RSM) experiment was designed by Box-Behnken (BBD), and the quadratic polynomial response objective function between process parameters and y1 and y2 was established to obtain the optimal process parameter combination that affected the forming quality of the gray hopper. Finally, the experimental results show that the scheme can effectively improve the forming quality of the gray hopper, eliminate the forming defects of the gray hopper, and provide an effective reference on the defect optimization for this kind of deep drawing parts which was verified by the numerical simulation and actual production.

基金项目：

汽车蓄能器壳体零件冷温段复合成形技术开发((12)CL-003)

作者简介：刘尚保（1997-），男，硕士研究生 E-mail：2276862275@qq.com 通信作者：龚红英（1974-），女，博士，教授 E-mail：ghyyw1974@163.com

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