Relation between shape and the phenomenon of flutter for bridge deck-like bluff bodies

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Authors

  • T. Nowicki Department of Structural Mechanics, Faculty of Civil Engineering and Architecture, Lublin University of Technology, Poland
  • A. Flaga Wind Engineering Laboratory, Institute of Structural Mechanics, Cracow University of Technology, Poland

Abstract

The paper deals with experimental analysis of the influence of cross–section shape of a body on the phenomenon of flutter. The aeroelastic section model that was the object of study in a laboratory corresponded to a central section of a long bridge deck. Such structures are subjected to flutter like aeroplane wings or helicopter rotors. Unlike in aviation, bridge decks cross-sections can be designed much more freely. The analysis is concentrated on a problem how the cross-section shape of a deck can affect interaction with incoming air stream. The results obtained suggest that the influence is closely related to elastic characteristics of a deck.

Keywords:

structure-fluid interaction, flutter, cable–stayed bridges, suspension bridges