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 |
Provenance: | 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 |
Files in This Item:
File | Description | Size | Format | |
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3-Unger-etal.pdf | DNB | 464.89 kB | Adobe PDF | View/Open |
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