锻压技术

6061铝合金曲线翻边零件橡皮成形回弹补偿与试验验证

英文标题：Experimental verification and springback compensation on rubber forming of curve flanging parts for aluminum alloy 6061

作者：张凌云王俊刘欢周帅朴小东

单位：沈阳航空航天大学中航工业南京机电液压工程研究中心空军航空大学飞行训练基地

关键词：橡皮成形 6061铝合金新淬火状态回弹回弹补偿成形极限

分类号：V261.2；TG146.2+1

出版年,卷(期):页码：2018,43(2):0-0

摘要：

橡皮成形是飞机钣金零件制造的一种重要的成形工艺，为提高典型零件橡皮成形的效率，对6061铝合金橡皮成形过程中产生的回弹问题进行了研究。首先对新淬火状态下6061铝合金板料进行拉伸试验，获得基本材料参数，为有限元模拟提供材料本构关系与模型；然后对6061铝合金进行材料成形极限试验，绘制出成形极限图；为得到曲线翻边零件橡皮成形回弹角度，采用Pamstamp 2G 有限元软件进行模拟，通过基于理论回弹算法二次开发的回弹补偿模块进行模具回弹补偿。结果表明，补偿后零件所有部位偏差均在1°以内。最后通过实际成形试验，验证了有限元模拟的可行性和回弹补偿的可靠性。

Rubber forming is one of the most important forming process in the manufacture of aircraft sheet metal parts. In order to improve the efficiency of rubber forming for typical parts, the springback problem produced in the rubber forming process aluminum alloy 6061 was researched. Firstly, the tensile test of aluminum alloy 6061 sheet in the new quenching state was carried out, and the basic material parameters were obtained as a reference for the constitutive relation and model of the material for the finite element simulation. Then, the forming limit tests of aluminum alloy 6061 were conducted, and the forming limit diagram was drawn. In order to obtain the springback angle of the curve flanging part, its forming process was simulated by finite element software Pamstamp 2G，and the springback compensation of die was conducted by the secondary developed springback compensation module based on theoretical springback algorithm. The results show that all the partial deviations are within 1°. Finally，through the actual forming test, the feasibility of finite element simulation and the reliability of springback compensation are verified.

基金项目：

作者简介：张凌云（1963-），男，博士，教授 E-mail：zhangly79@163.com 通信作者：王俊（1988-），女，硕士研究生 E-mail：hrbwj8520@163.com

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