Numerical and Experimental Investigation on Electro-Thermo-Mechanical Behavior of NiTi Shape Memory Alloy Wires

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F19%3APU136899" target="_blank" >RIV/00216305:26210/19:PU136899 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s40997-018-0183-8" target="_blank" >https://doi.org/10.1007/s40997-018-0183-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s40997-018-0183-8" target="_blank" >10.1007/s40997-018-0183-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical and Experimental Investigation on Electro-Thermo-Mechanical Behavior of NiTi Shape Memory Alloy Wires

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Numerical and Experimental Investigation on Electro-Thermo-Mechanical Behavior of NiTi Shape Memory Alloy Wires

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Iranian Journal of Science and Technology - Transactions of Mechanical Engineering

ISSN

2228-6187

e-ISSN

2364-1835

Svazek periodika

43

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

IR - Íránská islámská republika

Počet stran výsledku

9

Strana od-do

621-629

Kód UT WoS článku

000472062900048

EID výsledku v databázi Scopus

—