Aeroelastic stability analysis of heated panel with aerodynamic loading on both surfaces

作     者：ZHOU Jian YANG ZhiChun GU YingSong 

作者机构：Institute of Structural Dynamics and ControlSchool of AeronauticsNorthwestern Polytechnical UniversityXi’an 710072China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2012年第55卷第10期

页      面：2720-2726页

核心收录：

学科分类：0810[工学-信息与通信工程] 08[工学] 080103[工学-流体力学] 080203[工学-机械设计及理论] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.11072198,11102162) 111 Project of China (GrantNo. B07050) 

主　　题：气动弹性稳定性 面板结构 稳定性分析 气动载荷 高速飞行器 加热 气动压力 发动机喷管 

摘      要：Focusing on the aeroelastic stability of thin panel structure of airframe component such as engine nozzle of high-speed flight vehicles,a nonlinear aeroelastic model for a two-dimensional heated panel exposing both surfaces to the airflow with different aerodynamic pressures is established.The von Karman large deflection plate theory and the first-order piston theory are used in the formulation of aeroelastic motion.The critical conditions for aeroelastic stability and the stability boundaries are obtained using theoretical analysis and numerical computations,respectively.The results show that the panel is more prone to become unstable when its two surfaces are subject to aerodynamic loading simultaneously;only if the sum of the aerodynamic pressures on both surfaces of the panel satisfies flutter stability condition,can the panel be likely aeroelastically stable;compared with the general panel flutter problem that only one surface is exposed to the airflows,the present condition makes the panel become aeroelastically unstable at relatively small flight aerodynamic pressure.