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Proceedings Paper

Modified Brinson model as an equivalent one-dimensional constitutive equation of SMA spring
Author(s): Junghyun Ryu; Sungmin Ahn; Je-sung Koh; Kyu-Jin Cho; Maenghyo Cho
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Paper Abstract

Shape Memory Alloy (SMA) spring has great potential as a component of compact actuating system. Trade-off between recovery force and deformation range due to phase transformation is possible through the control of spring design parameters such as spring diameter. Deformation behavior of SMA spring is complicated function in three-dimensional space because its behavior is a combination of torsion, bending and stretching action. Therefore, three dimensional analysis of SMA spring is the most accurate simulation procedure. In this paper, modified one-dimensional Brinson model for SMA spring is proposed for more efficient and accurate simulation. In addition, numerical simulation of SMA spring is validated by comparing it with the results of experiment.

Paper Details

Date Published: 15 April 2011
PDF: 7 pages
Proc. SPIE 7981, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011, 79813W (15 April 2011); doi: 10.1117/12.881948
Show Author Affiliations
Junghyun Ryu, Seoul National Univ. (Korea, Republic of)
Sungmin Ahn, Seoul National Univ. (Korea, Republic of)
Je-sung Koh, Seoul National Univ. (Korea, Republic of)
Kyu-Jin Cho, Seoul National Univ. (Korea, Republic of)
Maenghyo Cho, Seoul National Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 7981:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011
Masayoshi Tomizuka, Editor(s)

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