Shape design sensitivity for force density distribution of magnetic systems

Author

Lee, Se-Hee ; Kim, Dong-Hun ; Lee, Joon-Ho ; Kim, Byung-Sung ; Park, Il-Han

Author_Institution

Sch. of Electr. & Comput. Eng., Sung Kyun Kwan Univ., Suwon, South Korea

Volume

12

Issue

1

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

1471

Lastpage

1474

Abstract

This paper presents a design method for handling magnetic force density distributions in 2-D linear magnetic systems. In order to control not the global force but the distribution of local force density, the discrete sensitivity analysis is combined with the magnetic charge method. For calculation of the magnetic force density, we use the magnetic charge method that is valid from the viewpoint of mechanical deformation. The design sensitivity is obtained through the direct differentiation of the finite element system matrices. Two models of a levitated rod and a cantilever electromagnet are designed to produce the desired force density distribution. Their results show the validity of the proposed method.

Keywords

electromagnets; finite element analysis; magnetic flux; magnetic forces; magnetic levitation; sensitivity analysis; 2-D linear magnetic systems; cantilever electromagnet; direct differentiation; discrete sensitivity analysis; finite element system matrices; levitated rod; local force density; magnetic charge method; magnetic flux density; magnetic force density distributions; material boundary interface; mechanical deformation; shape design sensitivity; Design methodology; Finite element methods; Force control; Magnetic fields; Magnetic flux; Magnetic forces; Magnetic levitation; Magnetic materials; Shape; Superconducting magnets;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2002.1018680

Filename

1018680