Limit cycle oscillation prediction for aeroelastic systems with continuous non-linearities

A. Sedaghat; J. E. Cooper; J. R. Wright; A. Y T Leung

Limit cycle oscillation prediction for aeroelastic systems with continuous non-linearities

A. Sedaghat, J. E. Cooper, J. R. Wright, A. Y T Leung

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

Abstract

This paper describes an investigation into the prediction and characterisation of Limit Cycle Oscillations (LCO) occurring in non-linear aeroelastic systems. Through the use of Normal Form Theory, it is shown how it is possible to predict the amplitude of Limit Cycle Oscillations as function of two variables, the air speed and the reduced frequency. The approach is analytical and does away with the need for numerical simulation of the system. The methodology is demonstrated upon a simple two degrees-of-freedom aeroelastic wing model with cubic stiffness. The characteristics of the Limit Cycle Oscillations were determined and compared with those produced via numerical simulation. A good agreement was found for all the cases considered. © 2000 The American Institute of Aeronautics and Astronautics Inc. All rights reserved.

Original language	English
Title of host publication	41st Structures, Structural Dynamics, and Materials Conference and Exhibit
Publication status	Published - 2000
Externally published	Yes
Event	41st Structures, Structural Dynamics, and Materials Conference and Exhibit 2000 - Atlanta, GA, United States Duration: 3 Apr 2000 → 6 Apr 2000

Conference

Conference	41st Structures, Structural Dynamics, and Materials Conference and Exhibit 2000
Place	United States
City	Atlanta, GA
Period	3/04/00 → 6/04/00

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@inproceedings{f6ae0c8417e2455ab0098d6679a69d38,

title = "Limit cycle oscillation prediction for aeroelastic systems with continuous non-linearities",

abstract = "This paper describes an investigation into the prediction and characterisation of Limit Cycle Oscillations (LCO) occurring in non-linear aeroelastic systems. Through the use of Normal Form Theory, it is shown how it is possible to predict the amplitude of Limit Cycle Oscillations as function of two variables, the air speed and the reduced frequency. The approach is analytical and does away with the need for numerical simulation of the system. The methodology is demonstrated upon a simple two degrees-of-freedom aeroelastic wing model with cubic stiffness. The characteristics of the Limit Cycle Oscillations were determined and compared with those produced via numerical simulation. A good agreement was found for all the cases considered. {\textcopyright} 2000 The American Institute of Aeronautics and Astronautics Inc. All rights reserved.",

author = "A. Sedaghat and Cooper, {J. E.} and Wright, {J. R.} and Leung, {A. Y T}",

year = "2000",

language = "English",

booktitle = "41st Structures, Structural Dynamics, and Materials Conference and Exhibit",

note = "41st Structures, Structural Dynamics, and Materials Conference and Exhibit 2000 ; Conference date: 03-04-2000 Through 06-04-2000",

}

Limit cycle oscillation prediction for aeroelastic systems with continuous non-linearities. / Sedaghat, A.; Cooper, J. E.; Wright, J. R. et al.
41st Structures, Structural Dynamics, and Materials Conference and Exhibit. 2000.

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - Limit cycle oscillation prediction for aeroelastic systems with continuous non-linearities

AU - Sedaghat, A.

AU - Cooper, J. E.

AU - Wright, J. R.

AU - Leung, A. Y T

PY - 2000

Y1 - 2000

N2 - This paper describes an investigation into the prediction and characterisation of Limit Cycle Oscillations (LCO) occurring in non-linear aeroelastic systems. Through the use of Normal Form Theory, it is shown how it is possible to predict the amplitude of Limit Cycle Oscillations as function of two variables, the air speed and the reduced frequency. The approach is analytical and does away with the need for numerical simulation of the system. The methodology is demonstrated upon a simple two degrees-of-freedom aeroelastic wing model with cubic stiffness. The characteristics of the Limit Cycle Oscillations were determined and compared with those produced via numerical simulation. A good agreement was found for all the cases considered. © 2000 The American Institute of Aeronautics and Astronautics Inc. All rights reserved.

AB - This paper describes an investigation into the prediction and characterisation of Limit Cycle Oscillations (LCO) occurring in non-linear aeroelastic systems. Through the use of Normal Form Theory, it is shown how it is possible to predict the amplitude of Limit Cycle Oscillations as function of two variables, the air speed and the reduced frequency. The approach is analytical and does away with the need for numerical simulation of the system. The methodology is demonstrated upon a simple two degrees-of-freedom aeroelastic wing model with cubic stiffness. The characteristics of the Limit Cycle Oscillations were determined and compared with those produced via numerical simulation. A good agreement was found for all the cases considered. © 2000 The American Institute of Aeronautics and Astronautics Inc. All rights reserved.

UR - http://www.scopus.com/inward/record.url?scp=84896865536&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84896865536&origin=recordpage

M3 - RGC 32 - Refereed conference paper (with host publication)

BT - 41st Structures, Structural Dynamics, and Materials Conference and Exhibit

T2 - 41st Structures, Structural Dynamics, and Materials Conference and Exhibit 2000

Y2 - 3 April 2000 through 6 April 2000

ER -

Limit cycle oscillation prediction for aeroelastic systems with continuous non-linearities

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