Electrodynamics of Magnetic Pulse Welding Machines: Global and Local Electrical Analogues
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Date
2016-04-27
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Abstract
In this paper, a theoretical, experimental and numerical study of MPW machines is carried
out. While it is known that such machines are very complex by nature because of the coupling
between different parts, we used simple electrical analogues to describe its dynamics. A RLC
circuit modeling the whole machine is depicted and experimental results are shown. A
further study including numerical simulations allows to compute the current distribution and
estimate the magnetic field within the coil but also the magnetic pressure generated in the
process, all using a 2D model and reasonable assumptions. A late theoretical study opens
the way for innovative experimental measurements regarding the kinetics of the
deformations of metallic tubes, but also their mechanical behavior before the welding
process, making use of their capacitive properties.
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Keywords
magnetic pulse welding, electrical analogues, electrodynamics