摘要
以一对耦合控制面结构的气动弹性模型为研究对象,在准定常气动力的假设下,利用拉格朗日方程建立结构的颤振运动微分方程.用算例分析了结构在不同耦合刚度下非对称参数对颤振速度影响的变化规律.结果表明,结构参数的非对称有利于颤振速度的提高,但当非对称参数的量大到足以改变系统的颤振特征时,非对称参数并不一定能提高系统的颤振速度.
A flutter differential equation for two coupled asymmetrical control surfaces was derived using Lagrangian equation under the supposition of quasi-steady aerodynamic forces. Examples were presented to analyze the effects of asymmetrical parameters on the critical flutter velocity under different coupled stiffness. The results show that the asymmetry of structural parameters is beneficial to the increase in flutter velocity; but when the values of asymmetrical parameters are large enough to change the flutter characteristics of the system, the asynunetrical parameters might not increase flutter velocity.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2005年第6期779-782,792,共5页
Journal of Southwest Jiaotong University
基金
国家自然科学基金资助项目(10272092)
关键词
非对称
结构
准定常气动力
机翼
颤振
asymmetry
structure
quasi-stoady aerodynamic force
wing
flutter
