基于VPF工艺的铝合金覆盖件回弹研究  

Study on springback of aluminum alloy panel based on VPF

作　　者：李毅[1] 王忠金[2] 李延平[1] 

机构地区：[1]集美大学机械工程学院,福建厦门361021 [2]哈尔滨工业大学材料科学与工程学院,哈尔滨150001

出　　处：《材料科学与工艺》2012年第4期80-83,共4页Materials Science and Technology

基　　金：福建省自然科学基金资助项目(2011J05136);集美大学科研预研基金资助项目(ZQ2012001)

摘　　要：为了研究VPF工艺对铝合金覆盖件成形过程中回弹的影响,对VPF工艺成形过程中铝合金双曲率覆盖件的回弹特征进行了数值模拟和实验研究,并且与传统刚模成形零件的回弹特征进行了对比.研究结果表明:VPF工艺成形的铝合金双曲率覆盖件的回弹过程中同时存在正、负回弹现象,而传统刚模成形的零件回弹过程中只存在正回弹,并且VPF工艺成形的铝合金双曲率覆盖件大部分区域的回弹量小于传统刚模成形的零件;随着成形深度的增加,VPF工艺成形的铝合金双曲率覆盖件正回弹降低,负回弹量增加.To research the effects of viscous pressure forming （VPF） process on springbac panel, the springback of double-curved panel formed by the VPF process was investigated k of aluminum alloy by using numerical simulation and experimental methods. The springback characteristic of the panel by VPF was analyzed and compared with that of panel by stamping. The results show that the positive and negative springback occur by VPF, however,it is only the positive springback occurs by stamping. Furthermore, the springback value of VPF formed panel is smaller than that of panel formed by stamping. With the increasing of panel depth, the value of positive springback decreases and the value of negative springback increases.

关 键 词：铝合金覆盖件 粘性介质压力成形 回弹 有限元分析 

分 类 号：TG386[金属学及工艺—金属压力加工]