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- Title
Supersonic Flutter Characteristics of a Nonlinear Spring-Supported Composite Panel Applying Curvilinear Fiber Paths.
- Authors
Zhang, Ruohan; Duan, Jingbo; Pang, Yu; Yue, Yanmei; Xu, Buqing
- Abstract
Background: Due to the large span of Mach, supersonic vehicles experience complex nonlinear factors. Considering the nonlinear aeroelastic problems in practical operation is vital for the safety design of new aircraft. Purpose: This paper deals with the nonlinear flutter characteristics of a nonlinear spring supported variable-stiffness laminate panel in the supersonic airflow. Methods: The nonlinear equations are obtained by applying Hamilton's principles in the framework of the von-Karman's nonlinear theory and the third-order piston aerodynamic theory. The time-domain dynamic response of the variable-stiffness composite panel is obtained through the fourth-order Runge–Kutta method. Results: In the numerical illustration, the effects of several parameters such as the nonlinear aerodynamic force, nonlinear spring coefficients and support position, curved fiber angle orientation of the composite panel are studied. Conclusions: From numerical results, it was concluded that the curved fiber composite panel incorporating spring-support could obviously change the limit cycle oscillation (LCO) response.
- Subjects
HAMILTON-Jacobi equations; AERODYNAMIC load; LIMIT cycles; FIBER orientation; RUNGE-Kutta formulas; NONLINEAR theories
- Publication
Journal of Vibration Engineering & Technologies, 2024, Vol 12, Issue 3, p4729
- ISSN
2523-3920
- Publication type
Article
- DOI
10.1007/s42417-023-01147-5