Improvement of flux density uniformity in giant magnetostrictive material for acoustic vibration element

Author

Wakiwaka, H. ; Umezawa, T. ; Yamada, H. ; Kobayashi, K. ; Yoshikawa, T.

Author_Institution

Shinshu Univ., Nagano, Japan

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

2443

Lastpage

2445

Abstract

The magnetic circuit of an acoustic vibration element is analyzed using giant magnetostrictive material (AVEG). Such elements are used as the vibration source for undersea acoustic propagation of over 1000 km. The analysis uses the finite element method. Two magnetic circuits (an initial and an improved model), developed to obtain an even flux density distribution in both the axial and radial directions of the vibrator, are discussed. For both the initial and improved models, the flux density variations in the axial and radial directions within the vibrator are defined, compared, and examined

Keywords

acoustic radiators; finite element analysis; magnetic circuits; magnetic flux; magnetostrictive devices; acoustic vibration element; axial directions; finite element method; flux density uniformity; giant magnetostrictive material; magnetic circuit; radial directions; undersea acoustic propagation; vibration source; Acoustic materials; Finite element methods; Magnetic analysis; Magnetic circuits; Magnetic flux; Magnetic materials; Magnetostatics; Magnetostriction; Permanent magnets; Underwater acoustics;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.280989

Filename

280989