ALE-based 3D FE simulation of electromagnetic forming |
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| Authors: | Marcus Stiemer Jaan Unger Heribert Blum Bob Svendsen |
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| Affiliation: | 1. University of Dortmund, Department of Mathematics, LS X, Vogelpothsweg 87, D-44221 Dortmund;2. University of Dortmund, Department of Mechanical Engineering, Leonhard-Euler-Str. 5, D-44221 Dortmund |
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| Abstract: | Electromagnetic forming is a contact-free high-speed forming process. The deformation of the work piece is driven by the Lorentz force which results from the interaction of a pulsed magnetic field with eddy currents induced in the work piece by the field itself. The purpose of this work is to present a fully-coupled three-dimensional simulation of this process. For the mechanical structure, a thermoelastic, viscoplastic, electromagnetic material model is relevant, which is incorporated in a large-deformation dynamic formulation. The electromagnetic fields are governed by Maxwell's equations under quasistatic conditions. To consider their reduced regularity at material interfaces Nédélec elements are applied. Coupling takes the form of the Lorentz force, the electromotive intensity and the current geometry of the work piece. A staggered solution scheme based on a Lagrangian mesh for the work piece and an ALE formulation for the electromagnetic field is employed. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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