| 充液管道轴对称波的传播与衰减分析 |
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| 引用本文： | 严谨,张世亮,张娟.充液管道轴对称波的传播与衰减分析[J].船舶力学,2011,15(6):688-697. |
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| 作者姓名： | 严谨 张世亮 张娟 |
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| 作者单位： | 广东海洋大学,工程学院,广东湛江,524088;广东海洋大学,工程学院,广东湛江,524088;广东海洋大学,工程学院,广东湛江,524088 |
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| 基金项目： | Supported by China Scholarship Council(No.2009844130); National Natural Science Foundationof China(No.50905036); Guangdong Natural Science Foundation(No.7301156) |
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| 摘 要： | 在很多工程状况下,特别是船舶和海洋工程领域,管道的振动、噪声和疲劳失效是极其严重的问题。文章对充液管道的轴对称波的传播与衰减进行了解析研究。首先推导了周向模态n=0的管道轴对称振动方程,然后分别得到s=1流体波和s=2壳体波的波数表达式。接着,对波数以及管道和流体的阻抗进行了数值计算和讨论。结果发现,在这种模态下,波的传播与衰减随频率变化(频散特性),与壳体厚径比和流体密度密切相关。事实证明,这种耦合振动分析方法是简洁有效的。
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| 关 键 词： | 充液管道 轴对称波 波数 传播 衰减 |
Propagation and Attenuation of Axisymmetrical Wave in Fluid-filled Pipes |
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| YAN Jin,ZHANG Shi-liang,ZHANG Juan.Propagation and Attenuation of Axisymmetrical Wave in Fluid-filled Pipes[J].Journal of Ship Mechanics,2011,15(6):688-697. |
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| Authors: | YAN Jin ZHANG Shi-liang ZHANG Juan |
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| Institution: | YAN Jin,ZHANG Shi-liang,ZHANG Juan(Engineering College,Guangdong Ocean University,Zhanjiang 524088,China) |
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| Abstract: | Vibration,noise and fatigue failure of pipelines are serious problems in many engineering situations,especially in ship and ocean engineering areas.In this paper,the acoustic propagation and attenuation characteristics of axisymmetrical eigenmodes in a cylindrical,elastic,fluid-filled pipe are investigated analytically.Pipe equations for n=0 axisymmetrical wave motion are derived,and analytical expressions of wavenumber are obtained for s=1 and s=2 waves,which correspond to a fluid dominated wave and an axi... |
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| Keywords: | fluid-filled pipes axisymmetrical wave wavenumber propagation attenuation |
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