| 指数形声波导管的等效电路及其声传输特性 |
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| 引用本文： | 刘世清,姚晔,邱营营.指数形声波导管的等效电路及其声传输特性[J].浙江师范大学学报(自然科学版),2008,31(2):157-161. |
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| 作者姓名： | 刘世清 姚晔 邱营营 |
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| 作者单位： | 1. 浙江师范大学,数理与信息工程学院,浙江,金华,321004
2. 上海交通大学机械与动力工程学院,上海,200240 |
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| 基金项目： | 国家自然科学基金
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浙江省自然科学基金 |
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| 摘 要： | 基于机电类比原理，从特殊形式波动方程出发，推导出了指数形变截面声波导管的等效电路，从等效电路推导出了声波导管的阻抗转移公式．讨论了指数形波导管输入阻抗与负载阻抗之间的关系，并对其声传输特性进行了分析，为变截面声波导管的阻抗计算及工程设计提供一种简便而有效的等效电路分析方法．
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| 关 键 词： | 指数形声波导管 机电类比 T型等效电路 声阻抗 声传输 |
| 文章编号： | 1001-5051(2008)02-0157-05 |
| 修稿时间： | 2007年10月8日 |
The equivalent circuit and sound transmission characteristics of exponential acoustic waveguide |
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| LIU Shiqing,YAO Ye,QIU Yingying.The equivalent circuit and sound transmission characteristics of exponential acoustic waveguide[J].Journal of Zhejiang Normal University Natural Sciences,2008,31(2):157-161. |
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| Authors: | LIU Shiqing YAO Ye QIU Yingying |
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| Affiliation: | LIU Shiqing , YAO Ye, QIU Yingying ( 1. College of Mathematics, Physics and Information Engineering, Zhejiang Normal University, Jinhua Zhejiang 321004, China; 2. School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China ) |
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| Abstract: | Based on the theory of the electromechanical analogy and the special wave equation, the equivalent circuit of the exponential acoustic waveguide was derived, the formula of its impedance transformation was obtained. Then the relations between input and load impedance of the exponential waveguide was studied, the corresponding curve was presented and the sound transmission characteristics of the waveguide was discussed as well. It was proposed a new method of equivalent circuit for the engineering designs and calculations of the non-uniform cross-section waveguide. |
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| Keywords: | exponential waveguide electromechanical analogy T-type equivalent circuit acoustic impedance sound transmission |
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