噪声与振动控制

›› 2010, Vol. 30 ›› Issue (3): 55-59.DOI: 10.3969/j.issn.1006-1355.2010.03.015

• 振动理论与数值解法 • 上一篇    下一篇

《换能器组阵对声场指向性的影响》

林建,马建敏,庄子听   

  1. （复旦大学力学与工程科学系，上海200433）
  • 收稿日期:2009-07-13 修回日期:1900-01-01 出版日期:2010-06-18 发布日期:2010-06-18
  • 通讯作者: 林建

《Influence of Transducer Array on Directivity of Acoustic Fields》

LIN Jian,MA Jian-min,ZHUANG Zi-ting   

  1. (Department of Mechanics and Engineering Science, Fudan University, Shanghai 200433, China)
  • Received:2009-07-13 Revised:1900-01-01 Online:2010-06-18 Published:2010-06-18
  • Contact: LIN Jian

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摘要： 根据点声源的声场指向性函数，推导出了考虑换能器振动面积时单个超声波换能器的指向性函数和由其组成的矩形阵列的指向性函数，研究了单个超声波换能器和其组成阵列的指向性。计算分析了阵元面积、阵元间距及阵元数目对超声波换能器阵列指向性的影响，为高指向性噪声的控制和声武器对抗提供帮助。

关键词: 声学, 声场指向性, 换能器阵列, 指向性函数, 阵元面积, 阵元间距

Abstract: Based on the point source directivity function, the directivity functions of a finite area ultrasonic transducer and rectangular arrays of these transducers are obtained. Then, the directivity of the single transducer and the transducer arrays are studied. The influences of array element area, interelement spacing and the number of elements on the ultrasonic transducer array directivity are calculated and analyzed, which may be helpful for the control of high directivity noise and the countermeasure of acoustic weapon.

Key words: acoustics, sound field directivity, transducer array, directivity function, element area, interelement spacing

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