Publication detail
Numerical and Experimental Investigation on Electro-Thermo-Mechanical Behavior of NiTi Shape Memory Alloy Wires
SHAYANFARD, P. KADKHODAEI, M. JALALPOUR, A.
English title
Numerical and Experimental Investigation on Electro-Thermo-Mechanical Behavior of NiTi Shape Memory Alloy Wires
Type
journal article in Web of Science
Language
en
Original abstract
Electric heating of shape memory alloys (SMAs) is of great importance since it is one of the fastest ways to heat these alloys, especially in actuator applications where time response is important. Consequently, it is crucial to be able to predict the electro-thermo-mechanical (ETM) behavior of such materials. In this paper, ETM behavior of NiTi SMA thin wires under variable applied stresses is experimentally and numerically studied. A one-dimensional incremental formulation of an SMA ETM model, which has been previously derived in continuum mechanics framework, is implemented to predict the ETM response of SMA wires during electromechanical loadings. This 1-D model is able to account for both shape memory effect and the pseudoelasticity. A special test setup is prepared, and experimental responses under different loadings are examined. The results confirm the reliability of the model when the numerical strain-time responses are compared with the experimental findings at several electromechanical loading conditions.
English abstract
Electric heating of shape memory alloys (SMAs) is of great importance since it is one of the fastest ways to heat these alloys, especially in actuator applications where time response is important. Consequently, it is crucial to be able to predict the electro-thermo-mechanical (ETM) behavior of such materials. In this paper, ETM behavior of NiTi SMA thin wires under variable applied stresses is experimentally and numerically studied. A one-dimensional incremental formulation of an SMA ETM model, which has been previously derived in continuum mechanics framework, is implemented to predict the ETM response of SMA wires during electromechanical loadings. This 1-D model is able to account for both shape memory effect and the pseudoelasticity. A special test setup is prepared, and experimental responses under different loadings are examined. The results confirm the reliability of the model when the numerical strain-time responses are compared with the experimental findings at several electromechanical loading conditions.
Keywords in English
Shape memory alloy; Electro-thermo-mechanical; Wire; NiTi
Released
01.07.2019
Publisher
SPRINGER
Location
NEW YORK
ISSN
2228-6187
Volume
43
Number
1
Pages from–to
621–629
Pages count
9
BIBTEX
@article{BUT164617,
author="Pejman {Shayanfard},
title="Numerical and Experimental Investigation on Electro-Thermo-Mechanical Behavior of NiTi Shape Memory Alloy Wires",
year="2019",
volume="43",
number="1",
month="July",
pages="621--629",
publisher="SPRINGER",
address="NEW YORK",
issn="2228-6187"
}