Limit cycle oscillation prediction for aeroelastic systems with discrete structural non-linearities

G. A. Vio, J. E. Cooper, J. R. Wright

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    This paper describes an investigation into the prediction and characterisation of Limit Cycle Oscillations occurring in non-linear aeroelastic systems when bilinear structural non-linearities are present. Through the use of Normal Form theory, it is shown how it is possible to predict the amplitude of Limit Cycle Oscillations as a function of airspeed. The approach is analytical and dramatically reduces the need for numerical simulation of the system. The methodology is demonstrated upon simple two and multi-degree-of-freedom systems with bilinear nonlinearity. 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.
    Original languageEnglish
    Title of host publicationCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference|Collect Tech Pap AIAA ASME ASCE AHS Struct Struct Dyn Mater
    Pages1647-1657
    Number of pages10
    Volume3
    Publication statusPublished - 2002
    Event43rd Structures, Structural Dynamics and Materials Conference - Denver, CO
    Duration: 1 Jul 2002 → …

    Conference

    Conference43rd Structures, Structural Dynamics and Materials Conference
    CityDenver, CO
    Period1/07/02 → …

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