Research Article
Aug 1978
Effects of Turbulence on Bridge Flutter Derivatives
Authors: Robert H. Scanlan, M.ASCE, and Wen-Huang LinAuthor Affiliations
Publication: Journal of the Engineering Mechanics Division
Volume 104, Issue 4
Abstract
Bridge flutter derivatives have heretofore been obtained from models almost exclusively tested under oncoming laminar flow conditions. This paper demonstrates how a section model teest may be set up and the results interpreted to obtain bridge deck flutter derivatives under conditions of oncoming turbulent flow. New theory is necessary in the turbulent flow case, and this is developed in the paper. The technique described amounts to a system identification method in which aerodynamic results are inferred from a theoretical model plus measured results of turbulent wind components, together with the motion they cause in the model. Flutter derivative results for an arbitrary model shape, obtained under a particularly pronounced form of turbulence that does not necessarily duplicate the natural turbulent wind over a prototype, are compared with analogous results obtained under laminar flow.
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Published In
Journal of the Engineering Mechanics Division
Volume 104 • Issue 4 • August 1978
Pages: 719 - 733
Copyright
© 1978 American Society of Civil Engineers.
History
Published in print: Aug 1978
Published online: Feb 3, 2021
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Robert H. Scanlan, M.ASCE
Prof. of Civ. Engrg., Princeton Univ., Princeton, N.J.
Wen-Huang Lin
Asst. Mech. Engr., Components Tech. Div., Argonne National Labs., Argonne, Ill.
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.