Metal plate deformation under magnetic field pulse of complex shape

A dynamic deformation of sheet magnetic and nonmagnetic metal workpieces under a combination of a slowly varying primary magnetic field and a sequence of short magnetic field pulses with the opposite polarity is studied. This regime corresponds to backward electromagnetic forming. A fast motion of t...

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Bibliographic Details
Published in:Journal of applied physics 2019-08, Vol.126 (8)
Main Authors: Kudasov, Yu. B., Surdin, O. M., Platonov, V. V., Kozabaranov, R. V., Maslov, D. A., Makarov, I. V., Svetlov, A. S., Popov, E. Ya
Format: Article
Language:English
Subjects:
Applied physics
Circuits
Deformation
Electric potential
Electromagnetic forming
Electromotive forces
Magnetic fields
Magnetism
Magnetization
Metal plates
Polarity
Workpieces
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Summary:A dynamic deformation of sheet magnetic and nonmagnetic metal workpieces under a combination of a slowly varying primary magnetic field and a sequence of short magnetic field pulses with the opposite polarity is studied. This regime corresponds to backward electromagnetic forming. A fast motion of the workpiece induces an additional electromotive force in a discharge circuit and substantially alters a shape of the current pulse in an inductor. During the short opposite pulses, the Lorentz and magnetization components of the magnetic pressure on the magnetic workpiece demonstrate an unusual behavior, that is, the Lorentz pressure is attractive and the magnetization one is predominantly repulsive relative to the inductor. This phenomenon is discussed in terms of a two-dimensional axisymmetric problem.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.5108823