NDLI: Effect of the sheet thickness and current damping exponent on the optimum current frequency in electromagnetic forming

Content Provider	Springer Nature Link
Author	Cui, Xiaohui Li, Jianjun Mo, Jianhua Fang, Jinxiu Zhou, Bo Xiao, Xiaoting
Copyright Year	2015
Abstract	Current frequency is one of the key effect factors on forming efficiency during electromagnetic forming (EMF) process. In the past, many scholars considered that the optimum current frequency corresponds to the skin depth which should be less than workpiece thickness. This is because the magnetic field will greatly lose if the skin depth is larger than workpiece thickness. In this paper, the 2D sequence simulation method is utilized to predict the electromagnetic sheet bulging, and the simulation results are both in agreement with experimental results. It can be found that the larger of the magnetic field losses, the bigger displacement can be obtained in experiments. This is in stark contrast to previous results reported in literature. We also found that the sheet thickness and current damping exponent both have great effects on optimum current frequency if the discharging energy keeps constant, which can cause the skin depth corresponding to the optimum current frequency to be larger than the sheet thickness. Thus, the current frequency is a very complex factor on electromagnetic forming, and it is difficult to choose the optimum current frequency.
Starting Page	843
Ending Page	851
Page Count	9
File Format	PDF
ISSN	02683768
Journal	The International Journal of Advanced Manufacturing Technology
Volume Number	85
Issue Number	1-4
e-ISSN	14333015
Language	English
Publisher	Springer London
Publisher Date	2015-10-27
Publisher Place	London
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Electromagnetic sheet forming Optimum current frequency Effect factors Numerical simulation Industrial and Production Engineering Production Mechanical Engineering Computer-Aided Engineering (CAD, CAE) and Design
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Mechanical Engineering Computer Science Applications Software

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