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The magnetic viscous damping effect on the natural frequency of a beam plate subject to an in-plane magnetic field

Authors :
Lee, Jui-Lin
Lin, Chun-Bo
Source :
Journal of Applied Mechanics. Jan, 2010, Vol. 77 Issue 1, p11014, 10 p.
Publication Year :
2010

Abstract

Several magnetic force models were developed to interpret various phenomena of a soft ferromagnetic beam plate subjected to a uniform external magnetic field with different incident angles. In this paper, a new transverse magnetic force model for the interface between a ferromagnetic material and the air is derived with the continuation of magnetoelastic stress across the material boundary. It is noted that both the normal and the tangential components of magnetic field on the material boundary are considered in this model. By applying such a transverse magnetic force and the effect of magnetic viscous damping, a new theoretical model is constructed in this study to predict the natural frequency of a soft ferromagnetic beam plate placed in an in-plane magnetic field. The numerical results of the present study are displayed graphically and compared with the experimental data, which appeared in literature to assure the exactness of the present work. [DOI: 10.1115/1.3168602] Keywords: magnetic viscous damping, magnetic force model magnetoelasticity

Details

Language :
English
ISSN :
00218936
Volume :
77
Issue :
1
Database :
Gale General OneFile
Journal :
Journal of Applied Mechanics
Publication Type :
Academic Journal
Accession number :
edsgcl.219831032