A shape memory alloy adaptive tuned vibration absorber: design and implementation
A shape memory alloy adaptive tuned vibration absorber: design and implementation
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.
19-28
Rustighi, E.
9544ced4-5057-4491-a45c-643873dfed96
Brennan, M.J.
87c7bca3-a9e5-46aa-9153-34c712355a13
Mace, B.R.
cfb883c3-2211-4f3a-b7f3-d5beb9baaefe
2005
Rustighi, E.
9544ced4-5057-4491-a45c-643873dfed96
Brennan, M.J.
87c7bca3-a9e5-46aa-9153-34c712355a13
Mace, B.R.
cfb883c3-2211-4f3a-b7f3-d5beb9baaefe
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), .
(doi:10.1088/0964-1726/14/1/002).
Abstract
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.
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Published date: 2005
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Local EPrints ID: 28018
URI: http://eprints.soton.ac.uk/id/eprint/28018
PURE UUID: 982ead46-e974-49a8-9fc1-924468005587
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Date deposited: 28 Apr 2006
Last modified: 15 Mar 2024 07:22
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Author:
M.J. Brennan
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