ON THE PROBLEM OF CONSTRUCTING A FINITE ELEMENT MODEL OF A VIBRATION MICROGENERATOR

Author(s):  Kaung Myat Htoo, Kursk State University, Kursk, Russia, kaungmhtoo16267@gmail.com

V.M. Dovgal, Dr., Kursk State University, Kursk, Russia

Issue:  Volume 46, № 1

Rubric:  Computer simulation history

Annotation:  The paper describes approaches to the calculation of electromagnetic fields of a vibration microgenerator. The method of finding the distribution of a constant magnetic field in the vicinity of a ferromagnetic object based on the finite element method is presented. The calculation of the magnetic field was carried out in piecewise inhomogeneous media, when the properties of the medium within individual volumes depend on the coordinates, and at the interfaces of the media, the values of the electromagnetic parameters are discontinuous. To calculate the electromagnetic fields in open areas, the method of uniaxial well – coordinated layers-PML is used, which allows to approximate the boundaries of the computational domain to the objects under study. When calculating the magnetic field in the Cartesian coordinate system at the boundaries of the computational domain, layers of material were introduced, the magnetic parameters of which were described by the tridiagonal tensor of relative magnetic permeability. The results of the numerical experiments show a slight dependence of the obtained solution on the parameters of the UPML method.

Keywords:  magnetic field, finite element method, ferromagnetic material, computational element, inho-mogeneous medium, boundary conditions

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