| 后屈曲立管在周期流作用下振动特性预测方法 |
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| 引用本文： | 孙明光.后屈曲立管在周期流作用下振动特性预测方法[J].中山大学学报(自然科学版),1991,30(3):26-31. |
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| 作者姓名： | 孙明光 |
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| 作者单位： | 中山大学应用力学与工程系 |
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| 摘 要： | 分析研究在波与流扰动下的后屈曲立管运动,导出了单模运动的非线性方程,利用周期倍化分叉方法、Melnikov法以及且接求时域解方法,讨论了亚谐振发生的条件及流与波的影响,获得混沌及亚谐振发生的波幅/阻尼比的门槛值,不同方法估计的门槛值是基本一致的。
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| 关 键 词： | 分叉 谐振 混沌 立管 |
Predict of Behaviors of a Postbuckling Riser Vibrating due to Effects of Waves and Current |
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| Sun Mingguang.Predict of Behaviors of a Postbuckling Riser Vibrating due to Effects of Waves and Current[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,1991,30(3):26-31. |
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| Authors: | Sun Mingguang |
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| Institution: | Sun Mingguang Department of Applied Mechanics and Engineering |
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| Abstract: | The motion of a postbuckling riser under the effects of waves and current is investigated. The nonlinear equation for single mode is given. The conditions of subharmonic resonances are discussed, and the subharmonic and homoclinic bifu- rcation curves in wave amplitude-damping plane are obtained by using period dou- bling bifurcation method, Melnikov method and numerical method in time-domain. The results by the various method are consistent each other basically. |
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| Keywords: | bifurcation harmonic resonance chaos riser |
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