A proposal of finite-element analysis considering two-dimensional magnetic properties

Author

Fujiwara, Koji ; Adachi, Takayuki ; Takahashi, Norio

Author_Institution

Dept. of Electr. & Electron. Eng., Okayama Univ., Japan

Volume

38

Issue

2

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

889

Lastpage

892

Abstract

A technique for analyzing the magnetic field in anisotropic material using the effective anisotropic reluctivity proposed by Enokizono is examined. It is shown that the Enokizono model can be transformed into another model having a conventional form. By expanding the examination of such a conventional form, a new finite element formulation for taking account of the two-dimensional (2-D) magnetic property is proposed. As the modeling of the 2-D magnetic property at the high flux density region is important in the practical analysis of the magnetic device, the extrapolation method of the magnetic property is examined. It is shown that the Bezier interpolation is fairly effective to stabilize the convergence characteristic of the Newton-Raphson (N-R) iteration in the nonlinear magnetic field analysis, taking account of the 2-D magnetic property

Keywords

Newton-Raphson method; convergence of numerical methods; extrapolation; finite element analysis; interpolation; magnetic anisotropy; magnetic materials; Bezier interpolation; Enokizono model; Newton-Raphson iteration; anisotropic material; convergence characteristics; extrapolation; finite element analysis; nonlinear magnetic field; reluctivity; two-dimensional magnetic properties; Anisotropic magnetoresistance; Convergence; Extrapolation; Finite element methods; Interpolation; Magnetic analysis; Magnetic devices; Magnetic properties; Proposals; Two dimensional displays;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.996229

Filename

996229