高强6451铝合金自由曲面件成形回弹预测  

Springback prediction of forming free-form surface parts for high-strength 6451 aluminum alloy

作　　者：梁卫抗 王艺川 袁嵘 王乾廷 周策 邓将华[3] 冉继龙 刘贞山 Liang Weikang;Wang Yichuan;Yuan Rong;Wang Qianting;Zhou Ce;Deng Jianghua;Ran Jilong;Liu Zhenshan(College of Materials Science and Engineering,Fujian University of Technology,Fuzhou 350118,China;Fujian Nanping Aluminium Co.,Ltd.,Nanping 353000,China;School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou 350108,China;School of Materials Science and Engineering,Xiamen University of Technology,Xiamen 361024,China;Chinalco Ruimin Co.,Ltd.,Fuzhou 350015,China;Chinalco Materials Application Research Institute Co.,Ltd.,Beijing 102209,China)

机构地区：[1]福建理工大学材料科学与工程学院,福建福州350118 [2]福建省南平铝业股份有限公司,福建南平353000 [3]福州大学机械工程及自动化学院,福建福州350108 [4]厦门理工学院材料科学与工程学院,福建厦门361024 [5]中铝瑞闽股份有限公司,福建福州350015 [6]中铝材料应用研究院有限公司,北京102209

出　　处：《锻压技术》2025年第4期25-36,共12页Forging & Stamping Technology

基　　金：福建省科技计划区域发展项目(2023H4021);福建省科技计划对外合作产业化项目(2022I1011);福州市科技计划科技重大项目(2021-ZD-214);宁德市产学研合作项目(2021C004);福建省科技计划高校产学合作项目(2023H6035,2023H6036)。

摘　　要：针对汽车内覆盖件用高强6451铝合金冲压成形过程中存在的回弹等问题,以自由曲面件为研究对象,选用Yld2000-2d屈服准则与Voce-Swift混合硬化模型,开发了VUMAT子程序,对6451铝合金自由曲面件冲压成形过程进行仿真分析。利用ABAQUS软件研究了冲压速度、保压时间和循环次数对自由曲面件成形回弹的影响规律。结果表明:提高冲压速度、增加保压时间和循环次数能够降低自由曲面件的回弹量,且冲压速度影响最大,保压时间次之,循环次数影响最小。自由曲面件回弹量仿真值与试验值的误差在3.13%~11.31%之间,表明所开发的VUAMT子程序能够较好地预测自由曲面件的成形回弹规律。Aiming at the problem of springback in the stamping process of high-strength 6451 aluminum alloy for automoblie interior panels,for free-form surface parts,VUMAT subroutine was developed by yield criterion Yld2000-2d and Voce-Swift mixed hardening model to simulate and analysis the stamping process of free-form surface parts for 6451 aluminum alloy,and the influence laws of stamping speed,holding time and number of cycles on the springback of free-form surface parts were investigated by software ABAQUS.The results indicate that increasing the stamping speed,holding time and number of cycles can reduces the springback amount of free-form surface parts,and the stamping speed has the greatest impact,followed by the holding time,and the number of cycles has the least impact.The error between the simulated value and experimental value for the springback amount of free-form surface parts is 3.13%to 11.31%,which indicates that the developed VUMAT subroutine can better predict the springback law of free-form surface parts.

关 键 词：高强6451铝合金 屈服准则 硬化模型 自由曲面件 回弹 

分 类 号：TG386[金属学及工艺—金属压力加工]