3-D finite element analysis of electrodynamic repulsion forces in stationary electric contacts taking into account asymmetric shape

Author

Kawase, Yoshihiro ; Mori, Hiroyuki ; Ito, Shokichi

Author_Institution

Dept. of Electron. & Comput. Eng., Gifu Univ., Japan

Volume

33

Issue

2

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

1994

Lastpage

1999

Abstract

The quantitative characteristics of stationary electric contacts in electrical apparatus have been given by means of some calculations, based on an artificial model of the current flow lines which highly simplifies the treatment. We have developed a 3-D finite element method by which the static characteristics of the electric contacts having asymmetric shapes can be analyzed. Repulsion forces in the stationary electric contacts with rectangular solid contact members as well as ones with cylindrical contact members are calculated by our method. The validity is confirmed by comparing with the results by the well-known Holm formula

Keywords

electrodynamics; finite element analysis; point contacts; power apparatus; 3-D finite element analysis; Holm formula; artificial model; asymmetric shape; current flow lines; cylindrical contact members; electrical apparatus; electrodynamic repulsion forces; point contacts; quantitative characteristics; rectangular solid contact members; stationary electric contacts; Bridges; Conductors; Contacts; Electrodynamics; Equations; Finite element methods; Magnetic analysis; Rough surfaces; Shape; Surface roughness;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.582692

Filename

582692