Paper Title:
Experimental Study and Modeling of a Differential SMA Spring Actuator
  Abstract

A theoretical model of the displacement-heating response of the differential shape memory alloy (SMA) actuator was developed. The model was constructed by using the constitutive equation and considering the force equilibrium and the energy balance on the SMA. The output displacement was predicted as a function of the heating power by the model and the simulations of the output displacement and temperature of the SMA actuator were also obtained. To evaluate the model, a prototype actuator which was made up of two SMA coil springs placed opposite each other was briefly described and an experimental setup of the SMA actuator was developed to study the relations among the heating power, the temperature and the output displacement of the SMA actuator. The similarity between the simulated and experimental results verified the proposed model, which indicated that the proposed model could express the thermo-mechanical behavior of the differential Ni-Ti SMA actuators.

  Info
Periodical
Key Engineering Materials (Volumes 336-338)
Edited by
Wei Pan and Jianghong Gong
Pages
2631-2634
DOI
10.4028/www.scientific.net/KEM.336-338.2631
Citation
X. J. Liu, S. Z. Yan, F. Xu, S. Z. Wen, "Experimental Study and Modeling of a Differential SMA Spring Actuator", Key Engineering Materials, Vols. 336-338, pp. 2631-2634, 2007
Online since
April 2007
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Price
$32.00
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