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Energy-based constitutive Model for Magnetostrictive Materials and its Application to Iron-Gallium Alloys

Published online by Cambridge University Press:  01 February 2011

Jayasimha Atulasimha  and
Alison B. Flatau
Jayasimha Atulasimha
Affiliation:
atul@umd.edu, Univ of Maryland, College Park, Aerospace Engineering, 3181, Martin Hall, University of Maryland, College Park, MD, 20783, United States, 301-405-1141
Alison B. Flatau
Affiliation:
aflatau@umd.edu, Univ of Maryland, College Park, Aerospace Engineering, United States
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Abstract

An energy-based constitutive model that can simulate the performance of magnetostrictive actuators and sensors along any of the crystallographic orientations was developed. This model was validated by comparing its predictions with experimental actuator characteristics (λ-H and B-H curves) along the <100> and <110> directions as well as sensor characteristics (B-σ curves) along the <100> direction of single crystal FeGa samples with ∼18-19 at. % Ga. These experimental characteristics were obtained using 6.35 mm (1/4 inch) diameter and 25.4 mm (1 inch) long, oriented single crystal rods grown using the Bridgman method by the DOE Ames Lab.

Keywords

ferromagneticFeGa

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 888: Symposium V – Materials and Devices for Smart Systems II , 2005 , 0888-V04-10
Copyright
Copyright © Materials Research Society 2006

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References

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