Aerodynamic damping of randomly excited plates in stationary and moving air

A. Z. Tarnopolsky; J. C.S. Lai; N. H. Fletcher

doi:10.1006/jsvi.2001.3805

Aerodynamic damping of randomly excited plates in stationary and moving air

A. Z. Tarnopolsky^*, J. C.S. Lai, N. H. Fletcher

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

An experimental study of the aerodynamic damping of oscillating plates has been undertaken. Plates of various shapes were placed into an air flow normal to the plate and excited to oscillate parallel to the flow direction by electromagnetic forces of equal amplitudes and random frequencies. The aerodynamic damping of oscillating plates, evaluated in terms of a quality Q-factor from a frequency response resonance curve, was found to vary linearly with the absolute pressure in stationary surrounding air and with the air flow velocity in moving air. The flow velocity was also found to affect the aerodynamic damping more than the absolute pressure. A simple empirical model has been developed to predict the variation of the aerodynamic damping with the flow velocity.

Original language	English
Pages (from-to)	795-805
Number of pages	11
Journal	Journal of Sound and Vibration
Volume	253
Issue number	4
DOIs	https://doi.org/10.1006/jsvi.2001.3805
Publication status	Published - 13 Jun 2003

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10.1006/jsvi.2001.3805

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title = "Aerodynamic damping of randomly excited plates in stationary and moving air",

abstract = "An experimental study of the aerodynamic damping of oscillating plates has been undertaken. Plates of various shapes were placed into an air flow normal to the plate and excited to oscillate parallel to the flow direction by electromagnetic forces of equal amplitudes and random frequencies. The aerodynamic damping of oscillating plates, evaluated in terms of a quality Q-factor from a frequency response resonance curve, was found to vary linearly with the absolute pressure in stationary surrounding air and with the air flow velocity in moving air. The flow velocity was also found to affect the aerodynamic damping more than the absolute pressure. A simple empirical model has been developed to predict the variation of the aerodynamic damping with the flow velocity.",

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AU - Tarnopolsky, A. Z.

AU - Lai, J. C.S.

AU - Fletcher, N. H.

PY - 2003/6/13

Y1 - 2003/6/13

N2 - An experimental study of the aerodynamic damping of oscillating plates has been undertaken. Plates of various shapes were placed into an air flow normal to the plate and excited to oscillate parallel to the flow direction by electromagnetic forces of equal amplitudes and random frequencies. The aerodynamic damping of oscillating plates, evaluated in terms of a quality Q-factor from a frequency response resonance curve, was found to vary linearly with the absolute pressure in stationary surrounding air and with the air flow velocity in moving air. The flow velocity was also found to affect the aerodynamic damping more than the absolute pressure. A simple empirical model has been developed to predict the variation of the aerodynamic damping with the flow velocity.

AB - An experimental study of the aerodynamic damping of oscillating plates has been undertaken. Plates of various shapes were placed into an air flow normal to the plate and excited to oscillate parallel to the flow direction by electromagnetic forces of equal amplitudes and random frequencies. The aerodynamic damping of oscillating plates, evaluated in terms of a quality Q-factor from a frequency response resonance curve, was found to vary linearly with the absolute pressure in stationary surrounding air and with the air flow velocity in moving air. The flow velocity was also found to affect the aerodynamic damping more than the absolute pressure. A simple empirical model has been developed to predict the variation of the aerodynamic damping with the flow velocity.

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DO - 10.1006/jsvi.2001.3805

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JO - Journal of Sound and Vibration

JF - Journal of Sound and Vibration

IS - 4

ER -

Aerodynamic damping of randomly excited plates in stationary and moving air

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