A shape memory alloy adaptive tuned vibration absorber: design and implementation
Rustighi, E., Brennan, M.J. and Mace, B.R. (2005) A shape memory alloy adaptive tuned vibration absorber: design and implementation. Smart Materials and Structures, 14, (1), 19-28. (doi:10.1088/0964-1726/14/1/002).
In this paper a tuned vibration absorber (TVA) is realized using shape memory alloy (SMA) elements. The elastic modulus of SMA changes with temperature and this effect is exploited to develop a continuously tunable device.
A TVA with beam elements is described, a simple two-degree-of-freedom model developed and the TVA characterized experimentally. The behaviour during continuous heating and cooling is examined and the TVA is seen to be continuously tunable. A change in the tuned frequency of 21.4% is observed between the cold, martensite, and hot, austenite, states. This corresponds to a change in the elastic modulus of about 47.5%, somewhat less than expected.
The response time of the SMA TVA is long because of its thermal inertia. However, it is mechanically simple and has a reasonably good performance, despite the tuning parameters depending on the current in a strongly nonlinear way.
|Subjects:||T Technology > TN Mining engineering. Metallurgy
T Technology > TA Engineering (General). Civil engineering (General)
|Divisions:||University Structure - Pre August 2011 > Institute of Sound and Vibration Research > Signal Processing and Control
|Date Deposited:||28 Apr 2006|
|Last Modified:||28 Jun 2012 10:11|
|Contributors:||Rustighi, E. (Author)
Brennan, M.J. (Author)
Mace, B.R. (Author)
|Contact Email Address:||email@example.com|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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