Study of Magnetic Force Distribution for Electromagnetic V-shape Bending Forming of Small Size Flat Sheet
Xiao-Wei Chen1, Wen-Ping Wang 1, Min Wan1, Long Pan1, An-Lin Long1, Wei-Ren Xiong1, Cheng-Long Shi2, Zhong-Yu Zhou 3 [JP]
(1. School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China;2. Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; 3. Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China)
Abstract:
Electromagnetic V-shape bending of small size sheet blank is investigated numerically and experimentally. Three-dimensional electromagnetic field models are established to calculate the magnetic force distribution on the sheet by software ANSYS/EMAG. Series of electromagnetic V-shape bending forming experiments are presented, in which small size uniform pressure coil and big size round flat spiral coil are used. The results show that small size uniform pressure coil is not suitable for electromagnetic forming of small size flat sheet, and the coil is susceptible to failure such as bulging, ablation and cracking. When the plane dimension of round flat spiral coil is bigger than sheet blank sizes, the induced current crowding effect will be resulted which seriously influence the magnetic force distribution on the sheet. In this case, magnetic force distribution can be adjusted through the change of the relative position between coil and sheet, the desired deformation can be obtained finally. Therefore, big size round flat spiral coil can be well applied to electromagnetic V-shape bending forming of small size flat sheet.
Key words: Electromagnetic forming Small size sheet blank Induced current crowding effect Magnetic force distribution
DOI:10.11916/j.issn.1005-9113.2014.01.004
Clc Number:TG391
Fund:
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Study of Magnetic Force Distribution for Electromagnetic V-shape Bending Forming of Small Size Flat
本站小编 哈尔滨工业大学/2019-10-23
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