| 弹性介质中充液管道的波衰减特性 |
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| 引用本文： | 刘敬喜,李天匀,刘土光,李强.弹性介质中充液管道的波衰减特性[J].华中科技大学学报(自然科学版),2003,31(10):90-92. |
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| 作者姓名： | 刘敬喜 李天匀 刘土光 李强 |
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| 作者单位： | 华中科技大学交通科学与工程学院 |
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| 基金项目： | 国家自然科学基金资助项目 (6 0 0 0 2 0 0 5 ) |
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| 摘 要： | 从壳体基本运动方程出发，导出了弹性介质中的充液管道在轴对称运动下声振耦合系统的频散方程．利用数值方法得到了频散方程的完全解，对弹性介质中充液钢质管道和PVC塑料管道波传播衰减特性进行了研究．研究结果对利用声学的方法进行埋地供水管道泄漏检测有一定的参考意义。
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| 关 键 词： | 充液管道 衰减 弹性介质 频散方程 |
| 文章编号： | 1671-4512(2003)10-0090-03 |
| 修稿时间： | 2003年2月17日 |
The attenuation characteristics of waves in fluid-filled pipes surrounded by elastic media |
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| Liu Jingxi Li Tianyun Liu Tuguang Li Qiang Liu Jingxi Doctoral Candidate, College of Traffic Sci. & Eng.,Huazhong Univ. of Sci. & Tech.,Wuhan ,China..The attenuation characteristics of waves in fluid-filled pipes surrounded by elastic media[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2003,31(10):90-92. |
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| Authors: | Liu Jingxi Li Tianyun Liu Tuguang Li Qiang Liu Jingxi Doctoral Candidate College of Traffic Sci & Eng Huazhong Univ of Sci & Tech Wuhan China |
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| Institution: | Liu Jingxi Li Tianyun Liu Tuguang Li Qiang Liu Jingxi Doctoral Candidate, College of Traffic Sci. & Eng.,Huazhong Univ. of Sci. & Tech.,Wuhan 430074,China. |
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| Abstract: | The dispersion equation of structure acoustic coupling system for fluid filled pipes surrounded by elastic media under axisymmetric motion was derived from shell dynamic equation. A complete solution of dispersion equation was gained with numerical method, and the attenuation characteristics of wave propagation in fluid filled metal pipes and PVC plastic pipes surrounded by elastic media were studied. The result showed that the wave attenuation characteristics of fluid filled pipes surrounded by elastic media were useful in leaking detection of buried supply water pipeline by using acoustic method. |
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| Keywords: | fluid filled pipe attenuation elastic media dispersion equation |
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