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Design of a magnetostrictive (MS) actuator

Grunwald, Artur and Olabi, Abdul-Ghani (2008) Design of a magnetostrictive (MS) actuator. Sensors and Actuators A: Physical, 144 (1). pp. 161-175. ISSN 0924-4247

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Abstract

Several advanced technologies are introduced in automotive applications. Higher energy density and dynamic performance are demanding new and cost effective actuator structures. Magnetostriction (MS), change in shape of materials under the influence of an external magnetic field, is one of these advanced technologies. Good understanding of specific design constrains is required to define and optimized a magnetostrictive actuator. This paper presents parametrical analysis with magnetic simulation of a magnetostrictive actuator. Proposed actuator has been designed, and the performance has been evaluated on experimental rig. Strain, elongation of the shaft, of 1000ppm at 10Amp and a blocked force over 4500N has been achieved with shaft of 8mm diameter, made of Terfenol-D. Furthermore, the effect of pre-stress of the Terfenol-D shaft has been evaluated experimentally. The study shows that excellent features can be obtained by magnetostrictive materials for many advanced applications.

Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:magnetostriction; actuator; Terfenol-D; FEM;
Subjects:Engineering > Materials
Engineering > Mechanical engineering
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Mechanical and Manufacturing Engineering
Publisher:Elsevier
Official URL:http://dx.doi.org/10.1016/j.sna.2007.12.034
Copyright Information:Copyright © 2008 Elsevier B.V.
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:548
Deposited On:29 Jan 2010 13:27 by Abdul Olabi. Last Modified 29 Jan 2010 13:27

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