Research Article
Aug 1974
Indicial Aerodynamic Functions for Bridge Decks
Authors: Robert H. Scanlan, M.ASCE, Jean-Guy Béliveau, AM.ASCE, and Kathleen S. BudlongAuthor Affiliations
Publication: Journal of the Engineering Mechanics Division
Volume 100, Issue 4
Abstract
With certain classical results for airfoils as a guide, lift and moment functions of the indicial type are derived for suspension bridge deck sections of either the open truss or streamlined variety. Bluff deck sections susceptible to coherent vortex shedding are not treated. The indicial functions are obtained analytically from the experimentally-derived linear-theory flutter derivatives of the bridge deck sections in question. The method used is nonlinear least squares, wherein a prescribed exponential form with unknown coefficients for the indicial function is determined by fitting transformed counterparts of it to the corresponding experimental flutter derivative curves. Several examples of indicial moment functions of bridge deck sections are presented. These offer rather conclusive proof that Wagner or thin airfoil theory alone is inadequate for application to bridge buffeting flutter and buffering analyses.
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Published In
Journal of the Engineering Mechanics Division
Volume 100 • Issue 4 • August 1974
Pages: 657 - 672
Copyright
© 1974 American Society of Civil Engineers.
History
Published in print: Aug 1974
Published online: Feb 3, 2021
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Affiliations
Robert H. Scanlan, M.ASCE
Prof., Dept. of Civ. and Geological Engrg., Princeton Univ., Princeton, N.J.
Jean-Guy Béliveau, AM.ASCE
Research Assoc., Dept. of Civ. Engrg. and Engrg. Mechanics, Columbia Univ., New York, N.Y.
Kathleen S. Budlong
Grad. Student, Dept. of Civ. and Geological Engrg., Princeton Univ., Princeton, N.J.
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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.
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.