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| 摘要: |
| 在模型试验时，发现巨型浮体闸门在非线性约束下有大幅度的谐和振荡。根据浮体闸门的构造特征，建立了单自由度非线性振荡模型。由于闸门的自振周期是水位与垂直开度的函数，非线性约束对自振周期的影响也将是水位与开度的函数。还分析了不同开度情况下非线性约束对自振周期和振幅的影响。 |
| 关键词: 非线性，谐和振荡，周期，振幅，闸门 |
| DOI： |
| 分类号:TV663 |
| 基金项目: |
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| Nonlinear oscillation of a large floating gate |
|
Yan Shiwu
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Nanjing Hydraulic Research Institute
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| Abstract: |
| Under the nonlinear binding forces the oscillations of a large floating gate are discussed. The harmonious oscillations with large amplitudes on the gate are discovered in the scale model.According to the structural feature of the floating gate, a nonlinear single - degree of harmonic oscillating model is set up. Due to the free vibration period of the gate is a function of the water level and gate opening, the,effect of the nonlinear binding forces is also a function of the same factors. The effect of nonlinear binding force on period and amplitude are also analyzed. |
| Key words: nonlinear, harmonic oscillation, period, amplitude, gate |
