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Proceedings Paper

Deformations and thermal response of active flexible rods with enbedded shape memory alloy actuators
Author(s): Zhonghe Bo; Dimitris C. Lagoudas
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Paper Abstract

The problem of plane deformations of flexible rods with embedded SMA line actuators is considered. A simple formula for calculating the shape change of flexible rods under uniform prestrain of an embedded actuation wire is given. The results are compared with previously obtained results based on a shear-lag model for the evaluation of actuation force, a finite element solution and experimental data. It is shown that the present model gives very good accuracy and simplicity. A thermal analysis of the SMA cool-down from the austenitic finish temperature is also considered in this paper. A solution for heat conduction in a cylindrical rod with off-center heat source is presented. The results show that for common elastomeric flexible materials the rate of heat conduction is slow. As a result frequency control of the thermal cycle in flexible rods is not as efficientas the mechanical shape control.

Paper Details

Date Published: 6 May 1994
PDF: 11 pages
Proc. SPIE 2190, Smart Structures and Materials 1994: Smart Structures and Intelligent Systems, (6 May 1994); doi: 10.1117/12.175204
Show Author Affiliations
Zhonghe Bo, Texas A&M Univ. (United States)
Dimitris C. Lagoudas, Texas A&M Univ. (United States)

Published in SPIE Proceedings Vol. 2190:
Smart Structures and Materials 1994: Smart Structures and Intelligent Systems
Nesbitt W. Hagood, Editor(s)

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