Low frequency damping of metal panels in ambient Air
Low frequency damping of metal panels in ambient Air
Mathematical models of structural dynamics are widely used and applied in many branches of science and engineering and it has been argued that many of the shortfalls with these models are due to the fact that the physics of joint dynamics are not properly represented. Experimental analyses are therefore widely used to underpin any work in this area. The most renowned model for predicting the damping resulting from air pumping is based on a significant quantity of experimental data and was generally developed and applied to high frequency vibrations of jointed or stiffened panels. This publication applies this model to low frequency panel vibrations, assessing the accuracy of the model for these systems. It is concluded that the theoretical model for high stiffness joints, although generally over approximating the damping magnitude, gives a good conservative estimate of the increase in damping due to air pumping for low frequency vibrations.
low frequency damping, metal panels, ambient air
1413-1420
Walker, S.J.I.
f28a342f-9755-48fd-94ea-09e44ac4dbf5
Aglietti, G.S.
e44d0dd4-0f71-4399-93d2-b802365cfb9e
Cunningham, P.R.
678bb28d-d7b5-4c50-b312-0a25cec0c3f5
2008
Walker, S.J.I.
f28a342f-9755-48fd-94ea-09e44ac4dbf5
Aglietti, G.S.
e44d0dd4-0f71-4399-93d2-b802365cfb9e
Cunningham, P.R.
678bb28d-d7b5-4c50-b312-0a25cec0c3f5
Walker, S.J.I., Aglietti, G.S. and Cunningham, P.R.
(2008)
Low frequency damping of metal panels in ambient Air.
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 222 (C8), .
(doi:10.1243/09544062JMES850).
Abstract
Mathematical models of structural dynamics are widely used and applied in many branches of science and engineering and it has been argued that many of the shortfalls with these models are due to the fact that the physics of joint dynamics are not properly represented. Experimental analyses are therefore widely used to underpin any work in this area. The most renowned model for predicting the damping resulting from air pumping is based on a significant quantity of experimental data and was generally developed and applied to high frequency vibrations of jointed or stiffened panels. This publication applies this model to low frequency panel vibrations, assessing the accuracy of the model for these systems. It is concluded that the theoretical model for high stiffness joints, although generally over approximating the damping magnitude, gives a good conservative estimate of the increase in damping due to air pumping for low frequency vibrations.
Text
2008_-_JMechEng_IMechE_-_Low_Frequency__Damping_of_Metal_Panels_in_Ambient_Air.pdf
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Published date: 2008
Keywords:
low frequency damping, metal panels, ambient air
Organisations:
Aerodynamics & Flight Mechanics, Aeronautics, Astronautics & Comp. Eng, Faculty of Engineering and the Environment, Astronautics Group
Identifiers
Local EPrints ID: 58551
URI: http://eprints.soton.ac.uk/id/eprint/58551
ISSN: 0954-4062
PURE UUID: 16297470-364e-42a9-b6a9-240eb0242f48
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Date deposited: 19 Aug 2008
Last modified: 15 Mar 2024 11:11
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Contributors
Author:
S.J.I. Walker
Author:
G.S. Aglietti
Author:
P.R. Cunningham
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