A computational-experimental thermomechanical study of shape memory alloy microcoils and its application to the design of actuators

被引：5
|
作者：
Velazquez, Ramiro
Hafez, Moustapha
Pissaloux, Edwige
Szewczyk, Jerome
机构：
[1] Univ Paris 06, Lab Robot Paris, CNRS, FRE 2507, F-92265 Fontenay Aux Roses, France
[2] CEA, LIST, Lat Electron & Mecatron Syst, F-92265 Fontenay Aux Roses, France
来源：
JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE | 2006年 / 3卷 / 04期
关键词：
shape memory alloy (SMA); NiTi microcoil; actuator; thermomechanical properties; thermomechanical modeling;
D O I：
10.1166/jctn.2006.3039
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
This paper presents a combined computational-experimental study on the thermomechanical properties and related parameters of shape memory alloy (SMA) coil springs and its application to the design of linear actuators. The thermomechanical properties of a fabricated NiTi SMA microcoil were evaluated using existing constitutive models and experimentally investigated through three types of tests: Actuation speed, isothermal loading/unloading, and fatigue due to plastic strain development. Both experimental and computational results are in good agreement and are used to characterize several SMA based actuator configurations at the meso/micro scale. Also, nano-sized SMA coils and actuators could be potentially designed/characterized using the principles in this study.
引用
收藏
页码：538 / 550
页数：13
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