An MPP version of the electromagnetism module in LS-DYNA for 3D coupled mechanical-thermal-electromagnetic simulations

  1. P. L’Eplattenier 2
  2. C. Ashcraft 2
  3. I. Ulacia 1
  1. 1 Mondragon Goi Eskola Politeknikoa, Mondragon Unibertsitatea, Loramendi 4, Mondragon 20500, Spain
  2. 2 Livermore Software Technology Corporation, 7374 Las Positas Road, Livermore, CA 94551, USA
Proceedings:
4th International Conference on High Speed Formig

Publisher: Institut für Umformtechnik - Technische Universität Dortmund

Year of publication: 2010

Pages: 250-263

Congress: Proceedings of 4th International Conference on High Speed Forming, Columbus, Ohio. Institut für Umformtechnik und Leichtbau. Dortmund. Vol. 82. Pp. 250-263. TU Dortmund University, 2010

Type: Conference paper

DOI: 10.17877/DE290R-8665 GOOGLE SCHOLAR lock_openOpen access editor

Abstract

LS-DYNA is a general multi-purpose explicit and implicit finite element program used toanalyse the non-linear dynamic response of three-dimensional solids and fluids. It isdeveloped by Livermore Software Technology Corporation (LSTC). A newelectromagnetism module is being developed in LS-DYNA for coupledmechanical/thermal/electromagnetic simulations. One of the main applications of thismodule is Electromagnetic Metal Forming (EMF). The electromagnetic fields are solvedusing a Finite Element Method (FEM) for the conductors coupled with a BoundaryElement Method (BEM) for the surrounding air/insulators. Both methods use elementsbased on discrete differential forms for improved accuracy.Recently, a Massively Parallel Processing (MPP) version of the EM module wasdeveloped allowing sharing the CPU and memory between different processors and thusfaster computations on larger problems. The implementation of the FEM and BEM in MPPwill be presented.Finally, the EM module will be illustrated on an actual EMF case. Experimental andnumerical results will be compared and the speed-up of the MPP version will be studied.