A theory of magnetostriction oriented towards applications

被引:57
作者
DeSimone, A [1 ]
James, RD [1 ]
机构
[1] UNIV MINNESOTA,DEPT AEROSP ENGN & MECH,MINNEAPOLIS,MN 55455
关键词
D O I
10.1063/1.364643
中图分类号
O59 [应用物理学];
学科分类号
摘要
A simplified theory of magnetostriction, derived from micromagnetics, is presented. The theory is designed to provide a systematic, yet manageable, quantitative tool in the design of magnetostrictive actuators, by making the ''calculation'' of the overall response of magnetostrictive specimens subjected to applied magnetic fields and loads a feasible task. Indeed, for simple geometries, the computation of energy minimizing domain patterns is reduced to a finite dimensional problem. As an application of the theory, a mechanism explaining the anisotropic magnetostriction observed in Terfenol-D rods, based on computed energetically optimal domain arrangements, is proposed. (C) 1997 American Institute of Physics.
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页码:5706 / 5708
页数:3
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