Equivalent damping of aeroelastic system of an airfoil with cubic stiffness |
| |
Authors: | YM Chen JK Liu G Meng |
| |
Institution: | aDepartment of Mechanics, Sun Yat-sen University, 135 Xingangxi Road, Guangzhou 510275, China;bState Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China |
| |
Abstract: | This paper presents a mathematical study on the subsonic aerodynamics acting on an airfoil with a cubic stiffness. One portion of aerodynamics is assumed as and replaced by an equivalent damping. Using the harmonic balance method, an equivalent system is deduced and studied by a numerical integration method. Numerical examples show the validity and feasibility of the proposed mathematical treatment of the aerodynamics. It reveals that the unsteady aerodynamics acting on the airfoil can not only affect the pitch stiffness but also result in additional damping. |
| |
Keywords: | Nonlinear aeroelastics Aerodynamics Equivalent damping |
本文献已被 ScienceDirect 等数据库收录! |
|