| 复合共鸣腔Janus宽带换能器 |
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| 引用本文： | 伊子旭,莫喜平,柴勇,刘永平. 复合共鸣腔Janus宽带换能器[J]. 声学技术, 2021, 40(2): 282-285 |
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| 作者姓名： | 伊子旭 莫喜平 柴勇 刘永平 |
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| 作者单位： | 中国科学院声学研究所, 北京 100190;中国科学院大学, 北京 100190;北京海洋声学装备工程技术研究中心, 北京 100190;中国科学院声学研究所, 北京 100190;北京海洋声学装备工程技术研究中心, 北京 100190 |
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| 基金项目： | 国家自然科学基金项目（11874387）、国家自然科学基金青年科学基金（11804367） |
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| 摘 要： | 提出了一种复合共鸣腔Janus换能器设计思想.在Janus-Helmholtz换能器基础上,增加Janus-Hammer Bell的圆环谐振模态,利用换能器三种工作模态的互相耦合,有效拓宽了换能器的工作频带.同时换能器整体采用溢流设计,实现内外静水压力平衡,适用于深水工作.文章首先介绍了复合共鸣腔的工作原理,给出了圆环...
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| 关 键 词： | 复合共鸣腔 谐振频率 有限元分析 圆环模态 |
| 收稿时间： | 2020-03-09 |
| 修稿时间： | 2020-03-23 |
A broadband Janus transducer with composite cavities |
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| YI Zixu,MO Xiping,CHAI Yong,LIU Yongping. A broadband Janus transducer with composite cavities[J]. Technical Acoustics, 2021, 40(2): 282-285 |
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| Authors: | YI Zixu MO Xiping CHAI Yong LIU Yongping |
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| Affiliation: | Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100190, China;Beijing Engineering Technology Research Center of Ocean Acoustic Equipment, Beijing 100190, China;Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China;Beijing Engineering Technology Research Center of Ocean Acoustic Equipment, Beijing 100190, China |
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| Abstract: | An idea of designing broadband Janus transducer with composite cavities is presented in this paper. Based on the Janus-Helmholtz transducer, the ring resonant mode of Janus-hammer bell is added, and the working bandwidth of the transducer is effectively widened by mutual coupling of three transducer working modes. Moreover, the free-flooded design of whole transducer is adopted to achieve internal and external hydrostatic pressure balance, which is suitable for working in deep water. The working principle of the composite resonance cavity is introduced at first, and then an approximate estimation formula of the resonance frequency of ring mode is given. The validity of the approximate formula is proved by comparison with the results of the finite element analysis. The structure of the transducer is optimized by the finite element method, and an experimental prototype is prepared according to the optimization results. The final test results are in good agreement with the simulation results. |
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| Keywords: | composite cavities resonant frequency finite element analysis ring mode |
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