Flutter derivatives of bridge deck sections are normally obtained under laminar flow conditions. The paper considers the theoretical stability of a thin plate in a fluctuating flow. The theory of stability of dynamic systems with periodic coefficients is applied to a derived equation of motion. Because of the assumptions made in the stability analysis, the procedure should only be viewed as a preliminary approach. The author gives details of proposed future research. Typical values are used in a worked example. The solution of a system of equations is shown to be stable where no eigenvalues are equal to one-half the fundamental frequency of the equation coefficients. The influence of velocity fluctuations upon the real part of the characteristic exponents corresponding to flow was found to be insignificant. (TRRL)

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  • Corporate Authors:

    IPC Science and Technology Press Limited

    IPC House, 32 High Street
    Guildford, Surrey  England 
  • Authors:
    • Simiu, E
    • Scanlan
  • Publication Date: 1979-7

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Filing Info

  • Accession Number: 00309329
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jun 26 1980 12:00AM