| Issue |
E3S Web of Conf.
Volume 401, 2023
V International Scientific Conference “Construction Mechanics, Hydraulics and Water Resources Engineering” (CONMECHYDRO - 2023)
|
|
|---|---|---|
| Article Number | 01088 | |
| Number of page(s) | 7 | |
| Section | Hydraulics of Structures, Hydraulic Engineering and Land Reclamation Construction | |
| DOI | https://doi.org/10.1051/e3sconf/202340101088 | |
| Published online | 11 July 2023 | |
Bending-torsional vibrations of aircraft wing
1 “Tashkent Institute of Irrigation and Agricultural Mechanization Engineers” National Research University, Tashkent, Uzbekistan
2 Tashkent State Agrarian University, Tashkent, Uzbekistan
3 Tashkent State Technical University, Tashkent, Uzbekistan
* Corresponding author: barnoshka4675@gmail.com
The problems of bending-torsional flutter of an aircraft wing are considered. Using equations of motion by the Bubnov-Galerkin method, based on the polynomial approximation of deflections and angle of twist, the problem is reduced to studying a system of ordinary integro-differential equations, where the independent variable is time. The solution of integro-differential equations with singular kernels is found by a numerical method based on quadrature formulas. The influence of physical-mechanical and geometric parameters on the flutter of the aircraft wing was studied. It was established that an account for the viscoelastic properties of the material of thin-walled aircraft structures leads to a 40-60% decrease in the critical flutter velocity. It is shown that an increase in the elongation parameter of an aircraft wing leads to a decrease in the flutter velocity.
© The Authors, published by EDP Sciences, 2023
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