| 可坍陷管位移振荡的稳定性问题 |
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| 引用本文： | 陈潜德,于建华.可坍陷管位移振荡的稳定性问题[J].四川大学学报(工程科学版),1998(2). |
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| 作者姓名： | 陈潜德 于建华 |
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| 作者单位： | 四川联合大学土木工程及应用力学系 |
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| 摘 要： | 可坍陷管中，当管流速度幅值超过临界速度时，会产生失稳和位移振荡。本文的分析表明，临界速度本身随管流还有一个相应的波动变化，波动周期与来流脉动周期相同，波动的幅度与管流速度的大小和频率的乘积成正相关。临界速度的这种波动变化会改变系统的稳定性。
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| 关 键 词： | 可坍管 临界速度 振荡稳定性 |
Exploration of Stability on Collapsible Tube Displacement Oscillation |
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| Chen Qiande,Yu Jianhua.Exploration of Stability on Collapsible Tube Displacement Oscillation[J].Journal of Sichuan University (Engineering Science Edition),1998(2). |
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| Authors: | Chen Qiande Yu Jianhua |
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| Abstract: | When the maximum velocity of an oscillated flow in the collapsible tube exceeds the so-called critical velocity,the tube will become unstable and oscillate with displacement.This paper points that the critical velocity itself has a fluctuation change with the flow, the period of the fluctuation is the same as that of the flow oscillation and the amplitude is proportional to the product of the velocity and the oscillation period of the flow.This fluctuation of the critical velocity will change the stability of the tube system. |
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| Keywords: | collapsible critical velocity oscillation stability |
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