舵面热颤振分析研究  

Analysis on Thermal Flutter of Rudder with Aerodynamic Heating

作　　者：张永超[1] 朱瑾[1] 刘炜[1] 

机构地区：[1]北京电子工程总体研究所,北京100854

出　　处：《现代防御技术》2014年第1期36-39,50,共5页Modern Defence Technology

摘　　要：建立小展弦比空气舵结构有限元模型,研究了典型温度分布下舵面结构模态特性,在此基础上得到不同温度分布下单独舵面结构热颤振特性。研究结果表明,温度上升,舵面刚度下降,结构频率降低,舵面的发散速度下降;温差增大,热应力影响增强使得热刚度提高,舵面的发散速度上升。The finite element model of air rudder structure is established and the structural modal characteristic in typical temperature field is studied. Based on the analysis results, thermal flutter charac- teristic of the separate rudder is studied in different temperature distributions. Research shows that elevat- ed temperature reduces the rudder stiffness distribution, the decreasing the structural frequency and final- ly control surface divergence speed falls. As the temperature difference increases, effect of thermal stress should be enhanced, so the thermal stiffness and rudder surface divergence speed rises.

关 键 词：气动加热 热刚度 模态分析 颤振分析 

分 类 号：TJ760.351[兵器科学与技术—武器系统与运用工程]