Structural magnetic strain model for magnetostrictive transducers

Author

Dapino, Marcelo J. ; Smith, Ralph C. ; Flatau, Alison B.

Author_Institution

Dept. of Aerosp. Eng., Iowa State Univ., Ames, IA, USA

Volume

36

Issue

3

fYear

2000

fDate

5/1/2000 12:00:00 AM

Firstpage

545

Lastpage

556

Abstract

This paper addresses the modeling of strains generated by magnetostrictive transducers in response to applied magnetic fields. The measured strains depend on both the rotation of moments within the material in response to the field and the elastic properties of the material. The magnetic behavior is characterized by considering the Jiles-Atherton mean field theory for ferromagnetic hysteresis in combination with a quadratic moment rotation model for magnetostriction. Elastic properties must be incorporated to account for the dynamics of the material as it vibrates. This is modeled by force balancing, which yields a wave equation with magnetostrictive inputs. The validity of the resulting transducer model is illustrated by comparison with experimental data

Keywords

magnetic hysteresis; magnetostrictive devices; transducers; Jiles-Atherton mean field theory; elastic properties; ferromagnetic hysteresis; force balance; magnetic field; magnetostriction; magnetostrictive transducer; quadratic moment rotation; structural magnetic strain model; vibration dynamics; wave equation; Magnetic field induced strain; Magnetic field measurement; Magnetic hysteresis; Magnetic materials; Magnetoelasticity; Magnetostriction; Partial differential equations; Rotation measurement; Strain measurement; Transducers;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.846217

Filename

846217