|
Abstract：
|
|
Springback is the main defect during bending formation,the traditional bending methods are not ideal to remove the springback.Electromagnetic forming is one kind of high velocity forming techniques,it can improve formability and strain distribution,reduce the springback effectively.1060 aluminium sheets was taked as object of study,a V-uniform pressure actuator was usesd to improve the forming efficiency and the electromagnetic bending and sizing of aluminum sheet with different widths was studied.The results show that with the increasing of electromagnetic energy,the springback is reduced and completely removed,the thicker the sheet is,the more electromagnetic energy is needed to remove the springback of the sheet.Sheet width does not influence the springback in V-workpiece sizing.Sizing the workpiece several times after lower electromagnetic energy,springback can be reduced and completely removed.The area which is closer to the bending line has the greater plastic deformation work than the others.
|
|
Funds：
|
|
国家自然科学资金资助项目(50875192)
|
|
AuthorIntro：
|
|
|
|
Reference：
|
[1]Benedyk,Joseph C.Aluminum alloy sheet for automotive ap-plications[J].Light Metal Age,2006,64(6):20-25.
[2]高亚楠,温龙飞.浅谈汽车材料的轻量化发展态势[J].汽车工业研究,2007,(3):33-35.
[3]Sakural,Takeo.Aluminum alloy sheet trends for automo-tive body panels[J].Research and Development Kobe SteelEngineering Reports,2007,2(57):45-50.
[4]Daehn G S,Altynova M,Balanethiram V S,et al.High-ve-locity metal forming-An old technology addresses new prob-lems[J].Journal of Metals,1995,7(7):42-45.
[5]李春峰.高能率成形技术[M].北京:国防工业出版社,2001.
[6]杨漾.电磁成形工艺的应用[J].模具制造,2003,(9):22-24.
[7]韩飞,莫健华,黄树槐.电磁成形技术在汽车制造中的应用[J].塑性工程学报,2006,13(5):100-105.
[8]Daehn Glenn S,Shang Jianhui,Vohnout J.Electromagneti-cally assisted sheet forming:enabling difficult shapes and ma-terials by controlled energy distribution[A].Anderson I,Marechaux T,Cockril C.Energy Efficient ManufacturingProcesses[C].San Diego,California,USA:The Miner-als,Metals and Materials Society,2003.
[9]Jianhui Shang.Electromagneticlly Assisted Sheet Metal Stamping[D].Ohio,USA:The Ohio State University,2006.
[10]Manish Kamal,Glenn S Daehn.A uniform pressure electro-magnetic actuator for forming flat sheets[J].Journal ofManufacturing Science and Engineering,2007,129(2):369-379.
|
|
Service：
|
|
【This site has not yet opened Download Service】【Add
Favorite】
|
|
|
|
Copyright Forging & Stamping Technology.All rights reserved