圆环式径向换能器辐射声场的研究

广东工业大学学报 ›› 2007, Vol. 24 ›› Issue (03): 103-.

圆环式径向换能器辐射声场的研究

广州市地下铁道设计研究院；广东省建筑科学研究院广东广州510010；广东广州510500；

出版日期:2007-08-10 发布日期:2007-08-10

The Analysis of Radiated Sound Field of Traffic Circle

(1.Design Institute of Guangzhou Metro Corporation,Guangzhou 510010,China;2.Guangdong Provincial Academy of Building Research,Guangzhou 510500,China)

Online:2007-08-10 Published:2007-08-10

摘要/Abstract

摘要： 研究圆环式径向换能器辐射声场特性,和分析声场的指向特性,得出圆环式径向换能器径向没有指向性而竖向有指向性,且环带越宽旁瓣越多,主瓣越尖锐.讨论了辐射声场的近场特性,表明近场和远场之间存在临界点,临界点随环宽变化而变化,环宽越大,临界点离环中心越远;反之,临界点离环中心越近. 更多还原

关键词: 超声波；换能器；辐射声场；指向性；近场特性；

Abstract: The radiated sound field of traffic circle radial transducer is researched.After analyzing the pressure distribution of the sound field,it concludes that the pressure distribution of the traffic circle radial transducer is not radial but vertical,and the broader the ring size is,the more sidelobes there are,the sharper the mainlobe is.By discussing the near sound field distribution,it shows that there is a critical pole between the near field and the far field,and the variation of the critical p...

Key words: ultrasonic； transducer； radiated sound field； pressure distribution； near sound field distribution；

吴增伟；徐天平； . 圆环式径向换能器辐射声场的研究[J]. 广东工业大学学报, 2007, 24(03): 103-.

WU Zeng-wei1,XU Tian-ping2. The Analysis of Radiated Sound Field of Traffic Circle[J]. Journal of Guangdong University of Technology, 2007, 24(03): 103-.

参考文献

[1] 李锦,任中杰,林书玉. 环状活塞换能器辐射声场研究[J]. 陕西师范大学学报(自然科学版). 2003(04)

[1] 陈凡等编著.基桩质量检测技术[M]. 中国建筑工业出版社, 2003

[2] 许肖梅编著.声学基础[M]. 科学出版社, 2003

[3] (美)J.L.罗斯(JosephL.Rose)著,何存富等译.固体中的超声波[M]. 科学出版社, 2004

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