锻压技术

基于AutoForm的高强钢板成形件回弹分析与补偿收敛性研究

英文标题：Springback analysis and compensation convergence research on formed parts of high strength steel plate based on AutoForm

作者：孔敏胡伟莫健华杨卫红刘晖晖朱月亭

单位：文华学院武汉三特力模具技术有限公司

关键词：高强钢收敛性回弹补偿补偿系数光顺系数

分类号：TG386

出版年,卷(期):页码：2019,44(9):172-179

摘要：

基于AutoForm软件，以某车型左前纵梁外侧板零件为载体，针对其几何特征少、曲率半径大、成形后产生的复杂扭曲回弹及翘曲回弹不稳定的特点，通过对该零件进行工艺分析、成形回弹及补偿模拟，研究补偿系数及光顺系数对回弹补偿收敛性的影响规律。采用优化的补偿系数和光顺系数进行补偿模拟，以补偿后的模面进行冲压实验，结果表明：2次迭代补偿就获得了收敛的最优模具型面，零件尺寸精度合格，该零件的回弹得到完全控制。因此，提出的在回弹补偿数值模拟过程中如何快速高效得到收敛的最优模具型面的方法可靠，该方法可用于指导其他复杂回弹高强钢板零件的生产。

Based on software AutoForm, taking the outside plate of left front longitudinal beam as the carrier, aiming at the characteristics of few geometric features, large curvature radius, complex twist springback and warpage springback instability produced after forming, the influence law of compensation coefficient and smoothing coefficient on the convergence of springback compensation were studied by the process analysis, forming springback and compensation simulation of the parts. Then, the compensation simulation was conducted by the optimized compensation coefficient and smoothing coefficient, and the stamping experiment was carried out based on the compensated die surface. The results show that the convergent optimal die surface is obtained by two iterations, and the dimensional accuracy of parts is qualified and the springback of parts is completely controlled. Thus, the method proposed is reliable for obtaining the convergent optimal die surface quickly and efficiently in the process of springback compensation numerical simulation, which can guide the production of other high strength steel parts with complex springback.

基金项目：

2018年度湖北省教育厅科学研究计划（B2018333）

孔敏（1991-），女，硕士，助教 E-mail：13207131768@163.com 通讯作者：胡伟（1990-），男，学士 E-mail：782802298@qq.com

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