Characterization and design of antagonistic shape memory alloy actuators

被引：30
|
作者：
Georges, T. [1 ]
Brailovski, V. [1 ]
Terriault, P. [1 ]
机构：
[1] Ecole Technol Super, Montreal, PQ H3C 1K3, Canada
来源：
SMART MATERIALS AND STRUCTURES | 2012年 / 21卷 / 03期
基金：
加拿大自然科学与工程研究理事会;
关键词：
SMA;
D O I：
10.1088/0964-1726/21/3/035010
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Antagonistic shape memory actuators use opposing shape memory alloy (SMA) elements to create devices capable of producing differential motion paths and two-way mechanical work in a very efficient manner. There is no requirement for additional bias elements to 're-arm' the actuators and allow repetitive actuation. The work generation potential of antagonistic shape memory actuators is determined by specific SMA element characteristics and their assembly conditions. In this study, the selected SMA wires are assembled in antagonistic configuration and characterized using a dedicated test bench to evaluate their stress-strain characteristics as a function of the number of cycles. Using these functional characteristics, a so-called 'working envelope' is built to assist in the design of such an actuator. Finally, the test bench is used to simulate a real application of an antagonistic actuator (case study).
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页数：8
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