Hybrid-method analysis of an open magnetic shield

Author

Forsman, Kimmo ; Ilmoniemi, Risto

Author_Institution

Lab. of Electr. & Magnetism, Tampere Univ. of Technol., Finland

Volume

35

Issue

3

fYear

1999

fDate

5/1/1999 12:00:00 AM

Firstpage

1127

Lastpage

1130

Abstract

The authors present an open magnetic shield of a new type consisting of ferromagnetic plates and rods connecting the plates. As the center is only partially surrounded by the shield, the shielded region is easily accessible. An example of this kind of shield is analyzed using a magnetostatic hybrid formulation, where only the magnetic structures need be modeled. They present how different parameters affect the performance of the shield. Ideally, this structure allows an infinite shielding factor at the center with a material of finite permeability

Keywords

ferromagnetic materials; finite element analysis; integro-differential equations; magnetic shielding; magnetic structure; connecting rods; ferromagnetic plates; finite permeability material; hybrid-method analysis; infinite shielding factor; magnetic structures; magnetostatic hybrid formulation; open magnetic shield; shielded region; shielding performance; Biological materials; Biomedical engineering; Hospitals; Joining processes; Laboratories; Magnetic analysis; Magnetic materials; Magnetic shielding; Magnetostatics; Permeability;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.767146

Filename

767146