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Effects of Current Frequency on Electromagnetic Sheet Metal Forming Process

Author:
Cao, Quanliang  Han, Xiaotao  Lai, Zhipeng  Zhang, Bo  Zhou, Zhongyu  Qiu, Li  Li, Liang  


Journal:
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY


Issue Date:
2014


Abstract(summary):

In the paper, the effects of current frequency on the electromagnetic sheet metal forming process are investigated using an efficient finite element model, which couples analysis of circuit, electromagnetic, and mechanical equations. Based on the initial electrical and structural parameters of the system, the model calculates the pulsed current flowing through the coil, the consequent magnetic force acting on the metal sheet, and finally the generated sheet deformation. The effects of current frequency on the maximum displacement in axial direction of the sheet are analyzed for two sheets by changing the capacitance of capacitor bank, while keeping the stored energy constant. The results show that there exist two optimum frequencies that produce relatively large sheet deformation and the optimum frequencies are related with the thickness of the sheet.


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