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Modeling of magnetostriction in particulate composite materials

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2 Author(s)
Zhou, Yan ; Dept. of Appl. Phys., Hong Kong Polytech., Kowloon, China ; Shin, F.G.

By combining a magnetostrictive material with a polymer or a metal, the magnetostrictive composites can have a reasonably large magnetostriction response for various sensor and actuator applications. In this paper, a relatively simple model for studying the magnetostrictively induced deformation behavior of magnetostrictive composites is presented. For illustrative purposes, we calculate the magnetostriction responses of composites containing Terfenol-D and nickel. Through numerical calculation, we have obtained the macroscopic longitudinal strains parallel to the applied magnetic field for Terfenol-D/glass composite and both longitudinal and transverse strains for the nickel/epoxy composite. Comparison with experimental data for both material systems shows our model is applicable up to very high volume fraction of magnetostrictive inclusions.

Published in:

Magnetics, IEEE Transactions on  (Volume:41 ,  Issue: 6 )