For fixed damping and fixed excited frequency the motion of the beam under small amplitude of force is periodic, but becomes chaotic through period doubling bifurcation with increase of the force.
对固定的参数激励频率和阻尼，当参数激励幅值较小时梁的运动是周期的，但大幅值激励会使运动通过倍周期分岔变为混沌。
This paper mainly introduces and discusses the experimental results of the forced oscillation excited by a non-sinusoidal periodic driving force.
在非正弦周期性外力作用下受迫振动的实验结果，并十分清楚地显示了受迫振动的较为完整的图像。
A model of periodic ring-stiffened cylindrical shell was designed, and the experiment on the vibrational power flow from the model excited by an outer force was accomplished.
设计了周期加肋圆柱壳结构模型，对加肋圆柱壳受激振动的能量流进行了实验研究。
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