Authors: Bach, F.
Blum, H.
Stiemer, M.
Svendsen, B.
Unger, J.
Walden, L.
Title: On the effect of current pulses on the material behavior during electromagnetic metal forming
Language (ISO): en
Abstract: Electromagnetic sheet metal forming (EMF) is an example of a high-speed forming process driven by the dynamics of a coupled electromagnetic-mechanical system. Basic physical processes involved in EMF, such as e.g. inelastic and hardening behavior or inertia, have been considered in previous works [1, 2]. The purpose of the current work is the investigation of temperature development during EMF and a possible reduction in the yield stress due to electric currents. While thermoelastic and viscoplastic effects are well-understood in this context [3], the possible influence of electric currents on dislocation motion, generally referred to as the electro-plastic effect [4, 5], is still an unresolved issue. In agreement with previous works [e.g., 6], it is concluded here that such an effect is at most of second-order and can most likely be safely neglected in the modeling and simulation of industrial EMF.
Subject Headings: electromagnetic metal forming
electroplasticity
magneto-thermo-inelastic coupling
URI: http://hdl.handle.net/2003/27076
http://dx.doi.org/10.17877/DE290R-12938
Issue Date: 2006
Publisher: Institut für Umformtechnik - Technische Universität Dortmund
Is part of: 2nd international conference on high speed forming, March 20th - 21st, 2006, Dortmund, Germany
Appears in Collections:ICHSF 2006

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