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Date of Publication:2022-10-07

Journal:大连理工大学学报

Affiliation of Author(s):机械工程学院

Issue:3

Page Number:346-350

ISSN No.:1000-8608

Abstract:Statics characteristic is one of the most important application-related properties of the giant magnetostrictive thin films (GMF), and the accurate analysis about it is the base of the application of GMF. Neutral axes and equivalent inertia moments of bi-layer cantilever beams coated with GMF of different sizes and substrates are obtained according to the relative theory of material mechanics. The equation of deflection curve in static magnetostrictive process is also developed by assuming that the magnetostriction effect of bi-layer cantilever beam coated with GMF is equivalent to the effect of a uniformly distributed bending moment. Experimental results of deformation characteristics reveal that the equation of deflection curve developed is valid. In addition, approximately linear relationship between mechanical quantities and magnetic quantities of GMF cantilever beam in static magnetostrictive process is observed which lays a theoretical foundation for further analysis of dynamic magnetostrictive effect.

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