The use of shape memory alloys for passive structural damping

P. Thomson, G. J. Balas, Perry H Leo

Research output: Contribution to journalArticle

77 Citations (Scopus)

Abstract

Experimental results on the dynamics of a beam constrained by shape memory wires are presented. It is observed that the damping increases significantly when the shape memory wires are stressed such that they lie within the pseudoelastic hysteresis loop. Theoretical models of the inner hysteresis loop are considered, and modal analysis is used to obtain the dynamic response of the system. Simulations of the system using these models give theoretical values of damping which agree well with those observed experimentally. The proposed models of the pseudoelastic hysteresis loop are adequate for providing an estimate of the initial increase of damping due to the use of prestressed shape memory wires in structures. These results demonstrate that pseudoelasticity of shape memory wires can be used to augment passive damping significantly in structural systems.

Original languageEnglish (US)
Article number006
Pages (from-to)36-41
Number of pages6
JournalSmart Materials and Structures
Volume4
Issue number1
DOIs
StatePublished - Dec 1 1995

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shape memory alloys
Shape memory effect
Hysteresis loops
Damping
damping
wire
Wire
hysteresis
Modal analysis
dynamic response
Dynamic response
estimates
simulation

Cite this

The use of shape memory alloys for passive structural damping. / Thomson, P.; Balas, G. J.; Leo, Perry H.

In: Smart Materials and Structures, Vol. 4, No. 1, 006, 01.12.1995, p. 36-41.

Research output: Contribution to journalArticle

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