Nonlinear Time-Domain Finite-Element Modeling of Thin Electromagnetic Shells

Author

Sabariego, Ruth V. ; Geuzaine, Christophe ; Dular, Patrick ; Gyselinck, Johan

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Univ. of Liege, Liege

Volume

45

Issue

3

fYear

2009

fDate

3/1/2009 12:00:00 AM

Firstpage

976

Lastpage

979

Abstract

A nonlinear time-domain extension of the classical linear frequency-domain thin-shell approach is presented. The interface conditions are expressed in terms of the average magnetic flux density throughout the shell thickness and a number of higher order components. The method is elaborated in the frame of the magnetic vector potential formulation. The nonlinear system of algebraic equations is solved by means of the Newton-Raphson scheme. To validate the new formulation, we consider a magnetic plate placed above a double line carrying a sinusoidal current. Results are compared with those obtained with a fine finite-element model.

Keywords

Newton-Raphson method; electromagnetic shielding; finite element analysis; magnetic flux; nonlinear equations; plates (structures); shells (structures); Newton-Raphson scheme; algebraic equations; classical linear frequency-domain thin-shell approach; electromagnetic shielding; high order components; magnetic flux density; magnetic plates; magnetic vector potential formulation; magnetodynamics; nonlinear time-domain finite-element modeling; shell thickness; sinusoidal current; thin electromagnetic shells; Electromagnetic shielding; finite-element (FE) methods; magnetodynamics; nonlinear time-domain analysis; thin-shell approximation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2009.2012491

Filename

4787433