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Proceedings Paper

Study on magneto-mechanical coupling model for giant magnetostrictive actuator
Author(s): Guoping Li; Tongpeng Han; Luwei Wang
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Paper Abstract

Based on analysis of the motion law of giant magnetostrictive material magnetic domain under magnetic field, a hysteresis model based on magnetization for giant magnetostrictive actuator is established. The model incorporates operating conditions of the actuator and fully considers nonlinear and hysteresis characteristics of the material. It includes two sub-models: magnetostriction and magnetization. The relationship between the strain λ and the magnetization M is illustrated in the magnetostriction model. The magnetization model describes the relationships amongst the effective field Heff , the anhysteretic magnetization Man , the reversible magnetization Mrev , the irreversible magnetization Mirr and the total magnetization M . The full set of parameters was estimated through a least square fit with experimental data. The model is proved to be able to accurate describe the relation between the input current I and the output strain λ by analyzing the experimental result.

Paper Details

Date Published: 21 October 2009
PDF: 8 pages
Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74934V (21 October 2009); doi: 10.1117/12.837490
Show Author Affiliations
Guoping Li, Ningbo Univ. (China)
Tongpeng Han, Ningbo Univ. (China)
Luwei Wang, Ningbo Univ. (China)


Published in SPIE Proceedings Vol. 7493:
Second International Conference on Smart Materials and Nanotechnology in Engineering
Jinsong Leng; Anand K. Asundi; Wolfgang Ecke, Editor(s)

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