Research on Data Processing Method for Continuously-Varying Dynamic Pressure Flutter Test

Hong Tao Guo; Bin Bin Lv; Li Yu; Yu Yan; Xi Ping Kou

doi:10.4028/www.scientific.net/AMM.397-400.2177

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 397-400Research on Data Processing Method for...

Research on Data Processing Method for Continuously-Varying Dynamic Pressure Flutter Test

Abstract:

For the continuously-varying dynamic pressure flutter test data in the high-speed wind tunnel; this paper analyzes the strengths and weaknesses of the data Processing Method in this field. The data selection and stacking mode is improved. A Butterworth IIR digital filter is used for digital filtering. The power spectral density function is computed by Fourier transform of the autocorrelation function. A pick-hold method is used to predict the flutter critical point. It is indicated that our method features high accuracy and efficiency by theoretical analysis and wind tunnel flutter test.

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Periodical:

Applied Mechanics and Materials (Volumes 397-400)

Pages:

2177-2181

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.397-400.2177

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Online since:

September 2013

Authors:

Hong Tao Guo, Bin Bin Lv, Li Yu, Yu Yan, Xi Ping Kou

Keywords:

Continuously-Varying Dynamic Pressure, Data Processing, Flutter, Wind Tunnel Test

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References

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