| 充液圆柱壳受迫振动的能量流输入及传播 |
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| 引用本文： | 徐慕冰, 张小铭, 张维衡. 充液圆柱壳受迫振动的能量流输入及传播[J]. 声学学报, 1999, 24(4): 391-399. DOI: 10.15949/j.cnki.0371-0025.1999.04.007 |
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| 作者姓名： | 徐慕冰 张小铭 张维衡 |
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| 作者单位： | 华中理工大学船海系!武汉４３００７４ |
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| 基金项目： | 国家自然科学基金!19404005 |
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| 摘 要： | 以一无限长弹性充液圆柱壳的受迫振动能量流为研究对象,分别用Flügge方程和Helmholtz方程分析了壳体及声场的波运动,利用圆柱亮-流体的耦合条件,获得系统的振动特性方程.分析了此系统在周向线分布余弦简谐外载作用下的响应;用傅里叶变换和反交换得到能量流的输入,以及当受迫振动波沿着壳体轴向传播时,壳体各内力和壳内流体所携带能量流的变化规律.
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| 收稿时间： | 1997-10-20 |
| 修稿时间： | 1997-12-16 |
Input vibrational power flow and its transmission in a fluid-filled shell |
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| XU Mubing, ZHANG Xiaoming, ZHANG Weiheng. Input vibrational power flow and its transmission in a fluid-filled shell[J]. ACTA ACUSTICA, 1999, 24(4): 391-399. DOI: 10.15949/j.cnki.0371-0025.1999.04.007 |
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| Authors: | XU Mubing ZHANG Xiaoming ZHANG Weiheng |
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| Abstract: | The characteristics of vibrational power flow in an infinite elastic cylindrical shell filled with fluid are investigated. The simple harmonic motion of shell and the pressure field in the contained fluid are described by the Flügge shell equations and the Helmholtz equation respectively. The vibrational equation of this system is obtained by using the coupling of shell and fluid. By using the Fourier transform and its inverse transform, the input power into this coupled system under a simple harmonic,linearly distributed driving force is studied. Along the shell, the transmission of the power flow carried by different shell internal forces and by the contained fluid are discussed. |
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