Frequency response characteristics for linear actuator made by NiMnGa shape memory alloy

Issue title: Selected Papers from the 15th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2011)

Article type: Research Article

Authors: Oonishi, Atsurou^a | Hirata, Katsuhiro^a | Yoo, Byungjin^{a; *} | Niguchi, Noboru^a

Affiliations: [a] Department of Adaptive Machine Systems, Osaka University, Osaka, Japan

Correspondence: [*] Corresponding author: Byungjin Yoo, Department of Adaptive Machine Systems, Osaka University, Yamadaoka 2-1, 565-0871, Osaka, Japan. E-mail: [email protected]

Abstract: This paper deals with the frequency response characteristics of a magnetically controlled shape memory alloy (MSMA) linear actuator made by NiMnGa alloy under external magnetic field. In order to predict the strain actuation of the linear actuator induced by external magnetic field at variable drive frequency, a new computational analysis method using finite element method (FEM) was proposed. The frequency response characteristics of the prototype linear actuator exhibited good agreement with the result of the proposed analysis method.

Keywords: Magnetic shape memory alloy, finite element method, linear actuator

DOI: 10.3233/JAE-2012-1559

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 39, no. 1-4, pp. 913-918, 2012