Modal and Aeroelastic Analysis of A High-Aspect-Ratio Wing with Large Deflection Capability
Publish place: International Journal of Advanced Design and Manufacturing Technology، Vol: 8، Issue: 1
Publish Year: 1394
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_ADMTL-8-1_005
تاریخ نمایه سازی: 18 اردیبهشت 1400
Abstract:
This paper describes a modified structural dynamics model for aeroelastic analysis of high-aspect-ratio wings undergoing large deformation behavior. To gain this aim, a moderate deflection beam model is modified with some important large deflection terms and then coupled with a state space unsteady aerodynamics model. Finite element method is used to discretize the equations of motion. A dynamic perturbation equation about a nonlinear static equilibrium is applied to determine the flutter boundary. The obtained results show good agreement in comparison with the other existing data such as high-altitude long-endurance (HALE) wing and Goland wing. It is found that the present aeroelastic tool have a good agreement in comparison with valid researches and also considering the effect of the geometric structural nonlinearity and higher order nonlinear terms on the flutter boundary determination is very significant.
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Authors
R. Koohi
Department of, Mechanical and Aerospace Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
H. Shahverdi
Department of Aerospace Engineering and Center of Excellence in Computational Aerospace, Amirkabir University of Technology, Tehran, Iran
H. Haddadpour
Department of Aerospace Engineering, Sharif University of Technology, Tehran, Iran
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