Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/19301
Title: A note on the fluid damping of an elastic cylinder in a cross-flow
Authors: Zhang, HJ
Zhou, Y
So, RMC
Mignolet, MP
Wang, ZJ
Issue Date: 2003
Publisher: Academic Press
Source: Journal of fluids and structures, 2003, v. 17, no. 3, p. 479-483 How to cite?
Journal: Journal of fluids and structures 
Abstract: This note reports an experimental study of the fluid damping of a long slender cylinder, fixed at both ends (no rotation and displacement), in a cross air-flow. The structural dynamic strain was measured in the lift direction over a range of reduced velocity Ur using a fibre-optic Bragg grating sensor. An auto-regressive moving average technique was used to deduce the effective damping ratios (including structural and fluid damping) from the strain data. The modal damping ratios corresponding to the first-, second- and third-mode vibrations over a range of Ur from 3 to 45 have been characterized and discussed. The results show that the value of fluid damping varied significantly at resonance when the vortex-shedding frequency coincides with one of the natural frequencies of the combined fluid-structure system.
URI: http://hdl.handle.net/10397/19301
ISSN: 0889-9746
EISSN: 1095-8622
DOI: 10.1016/S0889-9746(02)00137-8
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