Modeling the mechanical behavior of an SMA manipulator

Issue title: Proceedings of the twelfth International Symposium on Interdisciplinary Electromagnetic, Mechanic and Biomedical Problems, ISEM Bad Gastein

Article type: Research Article

Authors: Okuyama, Takeshi^{a; *} | Yakuwa, Kumiko^a | Luo, Yun^a | Higa, Masaru^b | Takagi, Toshiyuki^a

Affiliations: [a] Advanced Systems Evaluation Laboratory, Institute of Fluid Science, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan | [b] Tohoku University Biomedical Engineering Research Organization, Seiryo 2-1, Aoba-ku, Sendai, 980-8575, Japan

Correspondence: [*] Corresponding author. Tel./Fax: +81 22 217 5298; E-mail: okuyama@wert.ifs.tohoku.ac.jp

Abstract: In this work a manipulator made of a shape memory alloy (SMA) and driven by thermoelectric modules is described. The mechanical output of the manipulator is obtained during the phase transformation of the SMA. To control the mechanical output, the relation between the transformation and the deformation of the SMA has to be determined. In this paper, a phenomenological model is proposed to predict the mechanical behavior of the SMA manipulator. Its validity is confirmed by a comparison of the deformation results between the numerical simulation and experiments.

Keywords: Shape memory alloy, phase transformations, manipulator, thermoelectric module, two-way shape memory effect

DOI: 10.3233/JAE-2007-856

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 25, no. 1-4, pp. 495-501, 2007