An experimental investigation of shape memory alloy springs for passive vibration isolation

2001 ◽  
Author(s):  
John Mayes ◽  
Dimitris Lagoudas ◽  
B. Henderson
Keyword(s):  
Experimental Investigation ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Vibration Isolation ◽  
Passive Vibration Isolation

Modelling of Shape Memory Alloy Springs for Passive Vibration Isolation

2001 ◽  
Author(s):  
Dimitris C. Lagoudas ◽  
Mughees M. Khan ◽  
John J. Mayes
Keyword(s):  
Shape Memory Alloy ◽  
Dynamic System ◽  
Shape Memory ◽  
Vibration Isolation ◽  
Component Level ◽  
Physically Based Model ◽  
Passive Vibration Isolation ◽  
Physically Based ◽  
System Configurations ◽  
Vibrating Systems

Abstract In this work, a basis is set forth for studying the effect of Shape Memory Alloy pseudoelasticity on the behavior of vibrating systems. A physically based model for Shape Memory Alloy psuedoelastic response is modified to predict the component level response of Shape Memory Alloy springs and is integrated into a numerical solution of the non-linear dynamic system that results from the inclusion of Shape Memory Alloy components in a dynamic structural system. The effect of pseudoelasticity on a dynamic system is investigated for various loading levels and system configurations, and the importance of large amplitude motion is discussed. Promising results from these investigations, and the application of these studies to experimental work in progress by the authors are briefly discussed.

EXPERIMENTAL INVESTIGATION OF PIEZOELECTRIC VIBRATION-BASED ENERGY HARVESTING WITH SHAPE MEMORY ALLOY ELEMENTS

2019 ◽  
Author(s):  
Arthur Adeodato ◽  
gabriel xavier gonçalves borges ◽  
Brenno Tavares Duarte ◽  
Ricardo Alexandre Amar de Aguiar ◽  
Luciana Loureiro da Silva Monteiro ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Energy Harvesting ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Piezoelectric Vibration

scholarly journals Dynamic Characteristics of Hanging Truss Having Shape Memory Alloy Wires

2017 ◽  
Vol 7 (2) ◽  
pp. 6 ◽  
Author(s):  
Xuan Zhang ◽  
Kazuyuki Hanahara ◽  
Yukio Tada
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Dynamic Characteristics ◽  
Dynamic Problem ◽  
Vibration Isolation ◽  
Mechanical Characteristics ◽  
Structural System ◽  
Vibration Attenuation ◽  
Calculation Process ◽  
Absorption Characteristics

In this study, we discuss the dynamics of a type of hanging truss structural system consisting of rigid and wire members, part of which are SMA (shape memory alloy) wires. This kind of truss structure has the capability of vibration isolation and absorption. Characteristics of zero compressive stiffness of wire members, SMA wire members and hanging configuration of the structure itself contribute to the effect of vibration isolation. The hysteretic loop of SMA wires plays a significant role in vibration attenuation. Mathematical models for this kind of dynamic problem are developed. Calculation process is introduced to take into account the mechanical characteristics of SMA and wire members. Dynamic characteristics are discussed; simultaneously, the effects of vibration isolation and attenuation have been confirmed. On the basis of the numerical calculations, advantages of combinations of various types of wire members, including the truss units having no bracing wires have been demonstrated. 

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