Nonlinear aeroelastic analysis of airfoils: bifurcation and chaos

BHK Lee, SJ Price, YS Wong - Progress in aerospace sciences, 1999 - Elsevier
Different types of structural and aerodynamic nonlinearities commonly encountered in
aeronautical engineering are discussed. The equations of motion of a two-dimensional …

Complex nonlinear dynamics and vibration suppression of conceptual airfoil models: A state-of-the-art overview

Q Liu, Y Xu, J Kurths, X Liu - Chaos: An Interdisciplinary Journal of …, 2022 - pubs.aip.org
During the past few decades, several significant progresses have been made in exploring
complex nonlinear dynamics and vibration suppression of conceptual aeroelastic airfoil …

Aeroelastic instability problems for wind turbines

MH Hansen - Wind Energy: An International Journal for …, 2007 - Wiley Online Library
This paper deals with the aeroelastic instabilities that have occurred and may still occur for
modern commercial wind turbines: stall‐induced vibrations for stall‐turbines, and classical …

A complex networks based approach to nonlinear aeroelasticity

HS Varun, MS Aswathy, S Sarkar - Journal of Fluids and Structures, 2023 - Elsevier
The present study investigates the effect of low intensity additive noise on a subcritical pitch-
plunge aeroelastic system through the lens of complex networks. In the deterministic system …

[HTML][HTML] The sliding mode control for an airfoil system driven by harmonic and colored Gaussian noise excitations

Q Liu, Y Xu, C Xu, J Kurths - Applied Mathematical Modelling, 2018 - Elsevier
This paper addresses a sliding mode control (SMC) for an airfoil model excited by a
combination of harmonic force and colored Gaussian noise. Firstly, to reveal effects of …

Dynamical responses of airfoil models with harmonic excitation under uncertain disturbance

Y Xu, Q Liu, G Guo, C Xu, D Liu - Nonlinear Dynamics, 2017 - Springer
In this paper, we investigate nonlinear dynamical responses of two-degree-of-freedom airfoil
(TDOFA) models driven by harmonic excitation under uncertain disturbance. Firstly, based …

Intermittency in pitch-plunge aeroelastic systems explained through stochastic bifurcations

J Venkatramani, S Sarkar, S Gupta - Nonlinear Dynamics, 2018 - Springer
Aeroelastic systems with hardening nonlinearity exhibit supercritical Hopf bifurcation when
the flow velocity exceeds a critical velocity leading to self-sustaining large amplitude limit …

Aeroservoelasticity of an airfoil with parametric uncertainty and subjected to atmospheric gusts

X Zhang, M Kheiri, WF Xie - AIAA Journal, 2021 - arc.aiaa.org
This paper presents the dynamics and adaptive control of an airfoil with structural stiffness
and damping uncertainties, which is subjected to atmospheric gusts. The motion of the airfoil …

Bifurcation characteristics of a two-dimensional structurally non-linear airfoil in turbulent flow

D Poirel, SJ Price - Nonlinear dynamics, 2007 - Springer
The dynamics of a structurally non-linear two-dimensional airfoil in turbulent flow is
investigated numerically using a Monte Carlo approach. Both the longitudinal and vertical …

Early warning of noise-induced catastrophic high-amplitude oscillations in an airfoil model

J Ma, Q Liu, Y Xu, J Kurths - Chaos: An Interdisciplinary Journal of …, 2022 - pubs.aip.org
Noise-induced tipping from a low-amplitude oscillation state to a high-amplitude one is
widespread in airfoil systems. Its occurrence may cause fatigue damage to the wing …