Higher-Order Spectral Analysis of a Nonlinear Pitch and Plunge Apparatus | Zendy

Walter Silva | Zendy; Thomas Strganac | Zendy; Muhammad R. Hajj | Zendy

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Higher-Order Spectral Analysis of a Nonlinear Pitch and Plunge Apparatus

Author(s) -

Walter Silva,

Thomas Strganac,

Muhammad R. Hajj

Publication year - 2005

Publication title -

54th aiaa/asme/asce/ahs/asc structures, structural dynamics, and materials conference

Language(s) - English

Resource type - Conference proceedings

DOI - 10.2514/6.2005-2013

Subject(s) - nonlinear system , spectral analysis , order (exchange) , harmonic analysis , computer science , electronic engineering , physics , engineering , quantum mechanics , spectroscopy , finance , economics

Simulated aeroelastic responses of a nonlinear pitch and plunge apparatus are analyzed using various statistical signal processing techniques including higher-order spectral methods. A MATLAB version of the Nonlinear Aeroelastic Testbed Apparatus (NATA) at the Texas A&M University is used to generate various aeroelastic response data including limit cycle oscillations (LCO). Traditional and higher-order spectral (HOS) methods are applied to the simulated aeroelastic responses. Higher-order spectral methods are used to identify critical signatures that indicate the transition from linear to nonlinear (LCO) aeroelastic behavior.

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