Mechanical Behaviors of Torsion Actuator of Shape Memory Alloy
A shape memory alloy (SMA) torsion actuator is designed by using SMA wires and a thin-walled tube. A mechanical model, which predicts the thermo-mechanical behaviors of the SMA torsion actuator, is developed based on the knowledge of solid mechanics and constitutive relation of SMA. The relationship of the torsion-angle and temperature of the SMA torsion actuator is numerically described by using the mechanical model coupled with Tanaka’s, Liang’s and Zhou’s phase transformation models of SMA respectively. Results show the mechanical model well predict the thermo-mechanical behaviors of the SMA torsion actuator.
H.S. Lee, I.S. Yoon and M.H. Aliabadi
B. Zhou et al., "Mechanical Behaviors of Torsion Actuator of Shape Memory Alloy", Key Engineering Materials, Vols. 385-387, pp. 213-216, 2008