噪声与振动控制

›› 2009, Vol. 29 ›› Issue (1): 1-4.DOI: A

• 论文 •    下一篇

《水下弹性粒子悬浮层的声学特性》

宋扬1,朴胜春1,郭有松2   

  1. （1.哈尔滨工程大学水声工程学院， 哈尔滨 150001；2.船舶系统工程部，北京100036）
  • 收稿日期:2008-11-03 修回日期:1900-01-01 出版日期:2009-02-18 发布日期:2009-02-18
  • 通讯作者: 宋扬

《Acoustic Character of Underwater Suspension Layer with Elastic Particles》

SONG Yang1,PIAO Sheng-chun1, GUO You-song2   

  1. ( 1.School of UnderwaterAcoustic Engineering, Harbin Engineering University, Harbin 150001, China；2.Systems Engineering Research Institute,Beijing 100036, China)
  • Received:2008-11-03 Revised:1900-01-01 Online:2009-02-18 Published:2009-02-18
  • Contact: SONG Yang

摘要： 声波照射到悬浮层上，除界面处产生反射和透射外，在层中传播还会产生衰减。本文对弹性粒子悬浮层的声学特性进行了理论计算与仿真，给出弹性粒子悬浮层对声波的衰减系数、反射系数、透射系数等声学特性，随频率、悬浮层及其弹性粒子特征参数的变化规律。研究表明，低频情况下悬浮层声学特性随特征参数变化不明显，随着频率的升高，其声学特性对特征参数变的更加敏感。

关键词: 悬浮层, 弹性粒子, 声学特性, 特征参数

Abstract: When sound wave irradiates suspension layer, there is propagation attenuation in the layer besides reflection and transmission in the interface. Theory and computer simulation about acoustic character of underwater suspension with elastic particles are given. The rule of acoustic character of suspension layer changed with frequency and characteristic parameters of layer and particles is drawn. The results show that the variation of acoustic character of suspension layer in low frequency is not sharp. With the increase of frequency, the acoustic character of suspension layer is more sensitive to the characteristic parameters.

Key words: Suspension, elastic particle, acoustic capability, characteristic parameters

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