Simulation on Uniaxial-Tension Behavior of NiTi Shape Memory Alloy Films

Abstract:

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Based on experimental results reported in the reference, Liang-Rogers’ constitutive model for SMA is used to simulate the stress-strain curves of NiTi shape memory alloy films under uniaxial tension with isothermal conditions. The effects of film compositions and temperature on the tensile behavior of NiTi shape memory alloy films are discussed. By comparing the simulation results with the experimental results, it is found that the simulation curves agree basically with the experimental curves except that the phase-transformation regions are wider in the simulation curves. This demonstrates that the Liang-Rogers’ model can be used to predict the thermomechanical behavior of shape memory alloy films roughly. This study provides some theoretical foundation for the quantitative description and prediction of the actuation mechanism when shape memory alloy films are used as micro-actuators.

Info:

Periodical:

Advanced Materials Research (Volumes 79-82)

Edited by:

Yansheng Yin and Xin Wang

Pages:

1209-1212

DOI:

10.4028/www.scientific.net/AMR.79-82.1209

Citation:

S. S. Sun and J. Dong, "Simulation on Uniaxial-Tension Behavior of NiTi Shape Memory Alloy Films", Advanced Materials Research, Vols. 79-82, pp. 1209-1212, 2009

Online since:

August 2009

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Price:

$35.00

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