换能器辐射板材料对辐射声场分布的影响

doi:10.16039/j.cnki.cn22-1249.2018.09.008

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摘要

辐射板是换能器的声源输出装置，在安装空间限制声源尺寸的情况下，增加辐射板振动幅度成为研究的重点。本文仅考虑材料对辐射板振动幅度的影响情况，并进行了有限元软件WORKBENCH和ATILA软件分析了磁致伸缩换能器辐射板材料对振动幅频特性的影响以及对谐振腔内声场分布的影响。结果表明，相同激励与边界条件下，铝材料辐射板出现活塞振型时频率最高，输出位移最大，是其他材料辐射板输出位移的4.48-24.8倍；加入谐振腔体后，铝辐射板对应谐振腔内声压幅值最大，是其他材料对应辐射板辐射声压幅值的1.2-2.4倍。以上结论为频微型换能器辐射板的设计工作提供了有力依据。

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	于文鑫
	郑凯
	王丽慧
	刘海波
	汪建新

关键词: 换能器辐射板材料振动位移频率声压幅值有限元分析

Abstract:

The radiant panel is transducer of the sound source output device, the installation space constraints under the condition of enrollment size, increase the radiation plate vibration amplitude of the focus of research.This paper only considering the influence of the materials of radiant panel vibration amplitude, and has carried on the finite element software WORKBENCH and ATILA software analyzes the magnetostrictive transducer radiant panel material influence on vibration amplitude frequency characteristics and the influence of sound field distribution inside the cavity.Results show that the same incentives and boundary condition, the aluminum material appeared radiant panel piston type when the frequency is highest, has the biggest output displacement which was of 4.48 to 24.8 times to the other materials panel;After joining the cavity body, aluminum radiant panel inside the cavity acoustic pressure amplitude is the largest and the panel radiated sound pressure amplitude is of 1.2 to 2.4 times than the other material.Above conclusion for frequency miniature transducer radiant panel provides a strong basis for the design of the work.

Key words: transducer Radiant panel materials The vibration displacement Frequency Sound pressure amplitude The finite element analysis

出版日期: 2018-09-25 发布日期: 2018-09-25 整期出版日期: 2018-09-25

ZTFLH:

TB567

引用本文:

于文鑫, 郑凯, 王丽慧, 刘海波, 汪建新. 换能器辐射板材料对辐射声场分布的影响 [J]. 吉林化工学院学报, 2018, 35(9): 36-40.
YU Wen-xin, ZHENG Kai, WANG Li-hui, LIU Hai-bo, Wang Jian-xin. The Influence of Magnetostrictive Transducer Radiation Plate material on Radiation Sound Field Distribution . Journal of Jilin Institute of Chemical Technology, 2018, 35(9): 36-40.

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http://xuebao.jlict.edu.cn/CN/10.16039/j.cnki.cn22-1249.2018.09.008 或 http://xuebao.jlict.edu.cn/CN/Y2018/V35/I9/36

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