The influence of aerodynamic force matrix on critical flutter state with aerodynamic derivatives of four different sections was studied.
采用理想平板的气动导数研究了各气动导数对颤振临界状态的影响。
When the head's shape or width of central slot is unsuitable, central slot decreases critical flutter wind speed instead of increasing it.
当头部形状或开槽宽度不合适时，中间开槽不但不能提高颤振临界风速，反而降低了断面的颤振稳定性。
Examples were presented to analyze the effects of asymmetrical parameters on the critical flutter velocity under different coupled stiffness.
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。
At the same time, the substantiating test techniques have been described, especially the analog simulation test technique, sub-critical flutter test, closed-loop test, etc.
同时，还介绍了几种试验验证技术，主要是模拟仿真试验技术、亚临界颤振试验、闭环系统试验等。
A suspension bridge project is taken as an example, in which the evolution of critical wind speed of flutter during bridge erection is studied by a multi-mode flutter analysis approach.
以某悬索桥设计方案为工程背景，应用多模态颤振分析方法，分析了该桥架设阶段颤振临界风速的发展趋势。
Flutter derivatives play very important roles for determining the flutter critical wind speed and buffeting responses of long-span Bridges.
气动导数是大跨桥梁结构颤振和抖振分析中确定颤振临界风速和抖振响应的重要依据。
The experimental results indicate that the flutter critical speed increases by more than 14 percent.
实验结果表明：颤振临界速度提高了14%以上。
The studying of the different sections deck shows: the variation pattern of flutter critical wind speed of bridge with flat box deck and wind yaw Angle is significantly affected by wind attack Angle.
研究发现：扁平箱形断面桥梁的颤振临界风速与风偏角的关系明显地受到风攻角的影响。
Coupling control equation of system was presented based on assumption method and change tendencies of critical velocity for flutter with both gap and the thickness of beam were discussed.
采用假设模态法建立耦合控制方程。分析系统的颤振临界流速随间隙和板厚的变化规律。
The results show that the critical velocity for flutter decreases with the increase of gap while increases with the increase of beam's thickness.
结果表明，颤振临界流速随间隙的增大而降低；随板厚的增大而提高。
The results of the wind tunnel test show the flutter critical speed of the wing model increases by 37% after the implementation of AFS system.
风洞试验结果说明，采用颤振主动抑制控制系统后，机翼的颤振临界速度可提高37%。
Finally, to determine the bridge flutter, galloping and buffeting critical wind speed as a method of judging the stability, buffeting response analysis is the key point.
最后，对成桥运营阶段确定了颤振、驰振临界风速以此来做为稳定性的判断依据，并重点进行脉动风场的抖振响应分析。
Finally, to determine the bridge flutter, galloping and buffeting critical wind speed as a method of judging the stability, buffeting response analysis is the key point.
最后，对成桥运营阶段确定了颤振、驰振临界风速以此来做为稳定性的判断依据，并重点进行脉动风场的抖振响应分析。
应用推荐