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Date of Publication:2009-01-01

Journal:压电与声光

Affiliation of Author(s):机械工程学院

Issue:1

Page Number:90-93

ISSN No.:1004-2474

Abstract:Uniformity and intensity of drive magnetic field applied in giant magnetostrictive film is the main guarantee for the phenomenon of magnetostriction; also is the key in the research of magnetic-mechanical coupling properties of positive and negative giant magnetostrictive film. Aiming at the requirement of drive magnetic field, one Helmholtz coil with high uniformity and intensity of magnetic field was designed. Moreover, the dimension of the coil's structure was optimally designed, and the magnetic uniformity of axis and radial was calculated in theory and emulated by ANSYS. In the experiment, high uniformity and intensity of the magnetic field were verified, which satisfied the design requirement of magnetic field. Meanwhile fine dynamic response character was indicated with respect to the inner magnetic field of giant magnetostrictive film, which could be used for the further study of magnetostrictive drive devices.

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