Deformations and thermal response of active flexible rods with enbedded shape memory alloy actuators

Zhonghe Bo; Dimitris C. Lagoudas

doi:10.1117/12.175204

6 May 1994 Deformations and thermal response of active flexible rods with embedded shape memory alloy actuators

Zhonghe Bo, Dimitris C. Lagoudas

Proceedings Volume 2190, Smart Structures and Materials 1994: Smart Structures and Intelligent Systems; (1994) https://doi.org/10.1117/12.175204
Event: 1994 North American Conference on Smart Structures and Materials, 1994, Orlando, FL, United States

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.

Citation Download Citation

Zhonghe Bo and Dimitris C. Lagoudas "Deformations and thermal response of active flexible rods with embedded shape memory alloy actuators", Proc. SPIE 2190, Smart Structures and Materials 1994: Smart Structures and Intelligent Systems, (6 May 1994); https://doi.org/10.1117/12.175204

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