Authors: Ashcraft, C.
L Eplattenier, P.
Ulaca, I.
Title: An MPP version of the Electromagnetism module in LS-DYNA for 3D Coupled Mechanical-Thermal-Electromagnetic simulations
Language (ISO): en
Abstract: LS-DYNA is a general multi-purpose explicit and implicit finite element program used to analyse the non-linear dynamic response of three-dimensional solids and fluids. It is developed by Livermore Software Technology Corporation (LSTC). A new electromagnetism module is being developed in LS-DYNA for coupled mechanical/thermal/electromagnetic simulations. One of the main applications of this module is Electromagnetic Metal Forming (EMF). The electromagnetic fields are solved using a Finite Element Method (FEM) for the conductors coupled with a Boundary Element Method (BEM) for the surrounding air/insulators. Both methods use elements based on discrete differential forms for improved accuracy. Recently, a Massively Parallel Processing (MPP) version of the EM module was developed allowing sharing the CPU and memory between different processors and thus faster computations on larger problems. The implementation of the FEM and BEM in MPP will be presented. Finally, the EM module will be illustrated on an actual EMF case. Experimental and numerical results will be compared and the speed-up of the MPP version will be studied.
Subject Headings: boundary element method (BEM)
finite element method (FEM)
modelling
URI: http://hdl.handle.net/2003/27179
http://dx.doi.org/10.17877/DE290R-8665
Issue Date: 2010
Publisher: Institut für Umformtechnik - Technische Universität Dortmund
Is part of: 4th International Conference on High Speed Forming, March 9th-10th 2010 Columbus, Ohio, USA
Appears in Collections:ICHSF 2010

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