超音速下热壁板的颤振分析  

THE FLUTTER ANALYSIS OF THERMAL PANEL UNDER SUPERSONIC FLOW

作　　者：李丽丽[1] 赵永辉[1] 

机构地区：[1]南京航空航天大学机械结构动力学及控制国家重点实验室,南京210016

出　　处：《动力学与控制学报》2012年第1期67-70,共4页Journal of Dynamics and Control

基　　金：国家自然科学基金资助项目(10972100)~~

摘　　要：首先研究了热效应对壁板结构动力学特性的影响.将基于超音速活塞理论的非定常气动力模型与壁板的结构动力学方程相结合,得到了热壁板的颤振方程.利用p-k法进行了热壁板的颤振计算,讨论了气流偏角对颤振速度的影响.数值结果表明,热效应对壁板的固有特性有较大影响,进而影响壁板的颤振特性.The thermal effects on the kinetics of panel structure were studied. Combining the unsteady aerody- namic model based on sunpersoin piston theory with structural dynamics equation,the flutter equation of thermal panel was obtained. The flutter analysis on thermal panel was carried out by P-K method,and the trend of flow angle on the flutter velocity was discussed. The numerical results show that thermal effect has a great impact on the inherent characteristics of panel,thereby affecting the panel’s flutter characteristic.

关 键 词：热模态 壁板颤振 活塞理论 气流偏角 

分 类 号：V215.34[航空宇航科学与技术—航空宇航推进理论与工程]