从弹箭空间摆动和弹性振动耦合的动力学模型出发，对弹箭飞行过程中的共振不稳定性问题进行了研究。
Based on the coupled dynamic model for the spatial rotation and elastic vibration of a body, the resonance unstability of projectiles in flight is studied in the paper.
将系统振动模态分为耦合模态与弧立模态，由数组相互耦合的模态张成耦合模态子空间。
The vibration modes are divided into two classes:separated and coupled. The coupled-mode subspace is spanned by the groups of coupled modes.
针对无限长轨道上车辆轨道耦合振动响应特性，建立了铁路直线轨道结构空间振动模型。
In order to analyzing the vehicle-track coupling vibration character of infinite length track, a time-varying model of railway tangent track spatial vibration was presented.
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