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Simple method to reduce computation time in planar airgap 3D FEM non-linear problems

Abstract : In the present work, an easily implementable method to reduce CPU time for some 3D FEM problems is presented. A translational displacement between two parts on both sides of a planar airgap is taken into account with a change of coordinates in the airgap region along the z-axis. To achieve this, formulation and post processing are slightly adapted. In this digest, the proposed method is applied to an academic problem. Results are compared to a usual method. Time saving, ease of implementation and precision on prelimary results are really encouraging with a strong reduction of CPU time keeping a low relative deviation. The method could be easily applied to any configurations with planar airgap as MAGLEV, axial motor or levitation device.
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https://hal.univ-lorraine.fr/hal-02943724
Contributor : Julien Fontchastagner <>
Submitted on : Sunday, September 20, 2020 - 4:47:22 PM
Last modification on : Wednesday, October 14, 2020 - 4:06:40 AM

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  • HAL Id : hal-02943724, version 1

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Dominique Giraud, Baptiste Ristagno, Julien Fontchastagner, Nicolas Labbe, Denis Netter, et al.. Simple method to reduce computation time in planar airgap 3D FEM non-linear problems. 22nd International Conference on the Computation of Electromagnetic Fields, COMPUMAG 2019, Jun 2019, Paris, France. ⟨hal-02943724⟩

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