Estimation of Nonconservative Aerodynamic Pressure Leading to Flutter of Spinning Disks

Morten Hartvig Hansen, A Raman, C.D. Mote Jr.

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    An experimental method for predicting the onset of #utter of a disk spinning in a #uid medium is proposed. The method is based on a description of the aerodynamic loading on the disk as a distributed viscous damping force rotating relative to the disk. This model can arise from two aeroelastic theories described herein. It is shown analytically and experimentally that the few parameters of this model may be extracted from frequency response functions of the spinning disk. Parameters for a steel disk in air (with a near vacuum experiment as reference) are estimated at increasing rotation speeds below the onset of #utter. The #utter speed and mode of the disk are predicted. ( 2001 Academic Press
    Original languageEnglish
    JournalJournal of Fluids and Structures
    Volume15
    Pages (from-to)39-57
    ISSN0889-9746
    DOIs
    Publication statusPublished - 2001

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