Numerical simulation of double SMA wire actuator using two-way shape memory effect of SMA

Maenghyo Cho; Sanghaun Kim; Gun-In Kim

doi:10.1117/12.582270

28 February 2005 Numerical simulation of double SMA wire actuator using two-way shape memory effect of SMA

Maenghyo Cho, Sanghaun Kim, Gun-In Kim

Proceedings Volume 5649, Smart Structures, Devices, and Systems II; (2005) https://doi.org/10.1117/12.582270
Event: Smart Materials, Nano-, and Micro-Smart Systems, 2004, Sydney, Australia

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.

Citation Download Citation

Maenghyo Cho, Sanghaun Kim, and Gun-In Kim "Numerical simulation of double SMA wire actuator using two-way shape memory effect of SMA", Proc. SPIE 5649, Smart Structures, Devices, and Systems II, (28 February 2005); https://doi.org/10.1117/12.582270

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