forcing frequency

Based on a Jeffcott rotor model with nonlinear radial rub force, the approach to chaos is studied when the forcing frequency and nondimensional unbalanced mass are treated as control variables.

对具有质量偏心仅考虑径向碰摩力非线性的Jeffcott转子模型，研究了其通向混沌的路径。

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By wet mode analysis, the dependence of the reflectivity of the shell on the forcing frequency were derived and computed.

通过湿模态分析方法，给出了微球壳的散射率与外激励频率之间的关系曲线。

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Results indicate that the lateral forcing vibration frequency of train is close to the lateral natural vibration characteristics of the bridge when trains running at 70 and 75 km · h-1, and the resonance occurs.

研究结果表明：列车以70和75km。

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Phase shifter is added into the oscillator, forcing the working frequency of the sensors close to the center frequency, so the stability and the dynamic range of the oscillation circuit are improved.

在原有振荡电路中增加了移相环节，使传感器工作在中心频率下，提高了振荡电路的输出稳定度及动态响应范围。

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In order to reduce the vibration, we first make a modal analysis of the handle of the walking tractor and find that the second modal frequency is coupled with the primary forcing frequency of the engine.

为了减小振动，首先对扶手架进行模态分析，发现了第二阶模态频率与发动机一阶惯性力频率耦合。

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For synoptic scale systems, the SST thermal forcing mainly excites the atmospheric low-frequency oscillation.

对于天气尺度系统, 海温热力场则主要激发出大气低频振荡.

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