非线性二元机翼气动弹性近似解析研究

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2007, Vol. 28 ›› Issue (5): 1080-1084.

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Nonlinear Aeroelastic Analysis of Airfoil Using Quasianalytical Approach

LI Daochun,XIANG Jinwu

The Aircraft Institute, School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics

Received:2006-08-04 Revised:2006-12-16 Online:2007-10-15 Published:2007-10-15
Contact: XIANG Jinwu

Abstract

Abstract:

The dynamical equation of a two-dimensional airfoil with polynomial hysteresis nonlinearity is built in an incompressible flow. Then the harmonic balance method(HB) is used to solve the equation. According to a comparison with the results from numerical time marching integration, it is shown that the harmonic balance method can accurately predict the frequency and amplitude of flutter before the second bifurcation appeared. The power spectral density and time history are used to investigate the applicability of harmonic balance method.

Key words: nonlinear , aeroelasticity, , limit , circle , oscillation, , harmonic , balance , method, , hysteresis , nonlinearity, , flutter

CLC Number:

V215.3

LI Daochun;XIANG Jinwu. Nonlinear Aeroelastic Analysis of Airfoil Using Quasianalytical Approach[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2007, 28(5): 1080-1084.

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Nonlinear Aeroelastic Analysis of Airfoil Using Quasianalytical Approach

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