Pulsation Response of Two Dimensional Wing to Atmosphere Turbulence in Supersonic Flow

PDF(762 KB)

Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (4) : 110-112.

论文

Pulsation Response of Two Dimensional Wing to Atmosphere Turbulence in Supersonic Flow

ZHENG Guo-yong1, YANG Yi-ren2

Author information +

History +

Abstract

The dynamic response of two-dimensional wing to atmosphere turbulence is investigated. The aerodynamic force is resolved into two parts, free vibrating aerodynamic force and fluctuating aerodynamic force. The fluctuating pressure can be obtained by using trigonometric series composition method of random field. The root of mean square of response of system is calculated with the random theory. It is the focal point to analyze the influences of the mean velocity, the strength of turbulence and the integral measure of turbulence on the root of mean square of structure response. The results show that the root of mean square of response slowly and linearly increases when the flow velocity is low the flutter critical speed. But, when the flow velocity is over the flutter critical speed, the root of mean square of response prominently and linearly increases with the increasing of the flow velocity. However, the root of mean square of response is insensitive to the change of the integral measure of turbulence.

Key words

turbulence / limit cycle / flutter / piston theory / random response

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

ZHENG Guo-yong;YANG Yi-ren. Pulsation Response of Two Dimensional Wing to Atmosphere Turbulence in Supersonic Flow[J]. Journal of Vibration and Shock, 2009, 28(4): 110-112