Forced vibration of a sheet under periodic aerodynamic excitation

This paper describes vibration characteristics of a cantilevered flexible sheet under the periodic aerodynamic excitation. In the experiment, movable plates(exciter) are set at the upstream side from the sheet in a wind-tunnel. Moreover, a theoretical model for calculation of a frequency response (a...

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Bibliographic Details
Published inKikai Gakkai ronbunshū = Transactions of the Japan Society of Mechanical Engineers Vol. 86; no. 882; p. 19-00258
Main Authors HIROAKI, Keiichi, KATOU, Daiki, WATANABE, Masahiro
Format Journal Article
LanguageJapanese
Published The Japan Society of Mechanical Engineers 2020
Subjects
Aerodynamic excitation
Doublet-point Method
Flexible sheet
Frequency response
Unsteady lifting surface theory
Wind-tunnel experiment
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Summary:This paper describes vibration characteristics of a cantilevered flexible sheet under the periodic aerodynamic excitation. In the experiment, movable plates(exciter) are set at the upstream side from the sheet in a wind-tunnel. Moreover, a theoretical model for calculation of a frequency response (amplitude ratio between the movable plate and sheet) subjected to aerodynamic excitation by the movable plate is developed. Fluid force acting on the sheet surface is calculated by the Doublet-point Method based on the unsteady lifting surface theory. Finally, the local work done by the fluid force acting on the sheet surface under aerodynamic excitation is determined theoretically and the region in which the exciting fluid force acts is clarified.
ISSN:2187-9761
DOI:10.1299/transjsme.19-00258