锻压技术

基于CATIA的弯边零件橡皮囊液压成形下陷区回弹补偿及验证

英文标题：Springback compensation and verification on joggle in rubber hydraulic forming for flanging part based on CATIA

作者：张凌云陈瑶孟伟琪范作鹏

分类号：TG386

出版年,卷(期):页码：2018,43(1):83-89

摘要：

针对弯边零件橡皮囊液压成形过程中普遍存在的回弹现象，运用PAM-STAMP2G有限元分析软件对带下陷弯边零件进行模拟，发现下陷特征两侧的回弹值明显小于其他位置的回弹值，下陷特征限制了回弹的发生。利用解析法得到理论回弹公式，使用曲线法平面截取补偿算法和下陷区型面补偿方法解决了下陷区的型面补偿问题。在CATIA交互模式环境下完成了对回弹补偿系统的开发，对补偿后的模具进行有限元数值模拟，对比橡皮囊液压成形试验结果。发现零件回弹前后的角度偏差均在1°以内，验证了回弹补偿系统对带有下陷特征的弯边零件具有很好的补偿效果，节约了大量的修模成本。

Aiming at the springback phenomenon commonly occurred in the process of rubber hydraulic forming for flanging part, the flanging part with joggle was simulated by finite element analysis software PAM-STAMP2G, and the springback values on both sides of joggle were obviously smaller than that at other positions, the joggle characteristic limited the possibility of springback. Then, a theoretical springback formula was obtained by analytic method, and the problem of surface compensation on joggle was solved by the curve normal plane intercept compensation algorithm and the surface compensation method of joggle. Furthermore, the development of the springback compensation system was completed under CATIA interaction mode, the compensated die was simulated by finite element method, and the results were compared to the rubber hydraulic forming test. The results show that the angle deviation before and after springback of part is within 1°, which verifies that the springback compensation system has a good compensation effect on the flanging part with joggle and saves a lot of costs to modify die.

基金项目：

作者简介：张凌云（1963-），男，博士，教授，硕士生导师，E-mail：zhangly79@163.com；通讯作者：陈瑶（1992-），男，硕士研究生，E-mail：459311221@qq.com

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