Nonlinear Aeroelastic Response Analysis of Wing with Flared Folding Wingtip
Publication: Journal of Aerospace Engineering
Volume 37, Issue 3
Abstract
The use of flared folding wingtip (FFWT) for load alleviation has been considered in recent studies. Most studies analyzed FFWT based on the linear assumption and ignored the nonlinearity of large wingtip folding angle. In this paper, for FFWT, a nonlinear aeroelastic modeling method based on multibody dynamics and unsteady vortex lattice method (UVLM) is developed. For wing with free-float FFWT, equilibrium and gust responses are simulated, and the gust responses were compared to the results of wind tunnel test to verify the validity of this method. The simulation results show that the geometric nonlinearity of the wingtip has little effect on the main wing but obvious effect on the wingtip. For a wing with active wingtip, the responses excited by wingtip active folding are simulated and compared to the linear modal method, which shows that the nonlinearity has large effects on the wing, especially at low excitation frequencies, and may lead to occurrence of response frequencies different from excitation.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
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Information & Authors
Information
Published In
Journal of Aerospace Engineering
Volume 37 • Issue 3 • May 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Jun 8, 2023
Accepted: Oct 24, 2023
Published online: Jan 31, 2024
Published in print: May 1, 2024
Discussion open until: Jun 30, 2024
ASCE Technical Topics:
- Aeroelasticity
- Aerospace engineering
- Aircraft and spacecraft
- Aircraft wings
- Continuum mechanics
- Dynamics (solid mechanics)
- Elasticity and Inelasticity
- Engineering mechanics
- Excitation (physics)
- Material mechanics
- Material properties
- Materials engineering
- Mechanical properties
- Motion (dynamics)
- Natural frequency
- Nonlinear analysis
- Nonlinear response
- Oscillations
- Solid mechanics
- Structural analysis
- Structural behavior
- Structural engineering
- Wind engineering
- Wind gusts
- Wind tunnel
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