Experimental Study and Modeling of a TiNi Shape Memory Alloy Wire Actuator

Author:

Benzaoui H.1,Lexcellent C.2,Chaillet N.,Lang B.,Bourjault A.3

Affiliation:

1. Laboratoire d'Automatique de Besanqon, 25 rue Alain Savary, 25000 Besanqon, France; Laboratoire de Mécanique Appliquée R. CHALEAT, LMARC/IMFC UMR 6604 UFC-CNRS, 24 chemin de 1 'Epitaphe, 25000 Besan9on, France

2. Laboratoire de Mécanique Appliquée R. CHALEAT, LMARC/IMFC UMR 6604 UFC-CNRS, 24 chemin de 1 'Epitaphe, 25000 Besan9on, France

3. Laboratoire dAutomatique de Besan,on, LAB/IMFC UMR 6596 ENSMM-CNRS-UFC, 25 rue Alain Savary, 25000 Besancon, France

Abstract

Shape memory alloys (SMA) are often used as actuators in miniature articulated devices. In this paper, a single TiNi SMA wire loaded by a mass is studied as a basic actuator controlled by Joule's effect. First, we describe an experimental study of the wire (150,m in diameter) under coupled stress and temperature actions for different thermal input velocities in order to analyze its dynamical behavior. In the case of static loadings, modeling is performed with a macroscopic description of the thermomechanical behavior preformed by Leclercq and Lexcellent (1996). Then, the heat equation integration is sufficient to take into account the thermal input velocities. Comparison between experiment and modeling is fairly correct.

Publisher

SAGE Publications

Subject

Mechanical Engineering,General Materials Science

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3. Bibliography;Shape-memory Alloys Handbook;2013-04-04

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