发现板在两端简支、中点联结松动时，结构首先出现屈曲失稳，而不会发生颤振失稳。
For pined_pined, loosed midpoint support plate, it is found that the plate's buckling instability will happen first while the flutter instability will disappear.
发现板在两端简支、中点联结松动时，结构首先出现屈曲失稳，而不会发生颤振失稳。
For pined_pined, loosed midpoint support plate, it is found that the plates buckling instability will happen first while the flutter instability will disappear.
结构的颤振失稳风速呈下降趋势，最低颤振失稳风速出现在成桥阶段，临时墩的架设和边跨合拢对结构的颤振稳定性有提升作用。
The erection of the temporary piers in side spans and the completion of the side spans can improve the aerodynamic stability of the bridge under construction.
由于桥梁本身及其所处风环境的不确定性，桥梁颤振与气静力失稳的发生也是不确定的。
Since uncertain conditions of bridge structure and the wind circumstance should be accounted for, occurrence of flutter and aerostatic instability is therefor uncertain.
涡破裂前，气动弹性失稳表现为单纯的颤振问题。
Before the vortex breakdown, the aeroelastic instability presents itself as just a simple flutter.
研究了超声速气流中受热壁板的非线性气动弹性响应，发现了一种新的动态失稳现象——二次失稳型颤振。
A new dynamic instability phenomenon-secondary instability flutter-is found in the study of nonlinear aeroelastic response of heated panels in supersonic flow.
研究了超声速气流中受热壁板的非线性气动弹性响应，发现了一种新的动态失稳现象——二次失稳型颤振。
A new dynamic instability phenomenon-secondary instability flutter-is found in the study of nonlinear aeroelastic response of heated panels in supersonic flow.
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