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Proceedings Paper

Numerical simulation of double SMA wire actuator using two-way shape memory effect of SMA
Author(s): Maenghyo Cho; Sanghaun Kim; Gun-In Kim
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Paper Abstract

A structure using the two-way shape memory effect (TWSME) returns to its initial shape by increasing or decreasing temperature under initial residual stress. Through the thermo-mechanical constitutive equation of shape memory alloy (SMA) proposed by Lagoudas et al., we simulate the behavior of a double actuator in which two SMA wires are attached to the tip of bar under the initially given residual stress. Through the numerical results conducted in the present study, the proposed actuator device is suitable for repeated actuation. The simulation algorithm proposed in the present study can be applied extensively to the analysis of the assembled system of SMA-actuator and host structure in practical applications.

Paper Details

Date Published: 28 February 2005
PDF: 11 pages
Proc. SPIE 5649, Smart Structures, Devices, and Systems II, (28 February 2005); doi: 10.1117/12.582270
Show Author Affiliations
Maenghyo Cho, Seoul National Univ. (South Korea)
Sanghaun Kim, Seoul National Univ. (South Korea)
Gun-In Kim, Korea Military Academy (South Korea)

Published in SPIE Proceedings Vol. 5649:
Smart Structures, Devices, and Systems II
Said F. Al-Sarawi, Editor(s)

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