噪声与振动控制

›› 2011, Vol. 31 ›› Issue (2): 123-126.DOI: 10.3969/j.issn.1006-1355-2011.02.029

• 7.减振降噪设备和器材 • 上一篇    下一篇

多孔吸声材料的吸声特性研究

刘鹏辉,杨宜谦,姚京川   

  1. （ 中国铁道科学研究院 铁道建筑研究所， 北京 100081 ）
  • 收稿日期:2010-06-02 修回日期:2010-06-17 出版日期:2011-04-18 发布日期:2011-04-18
  • 通讯作者: 刘鹏辉

Study on Absorption Property of Porous Sound-Absorbing Materials

LIU Peng-Hui,YANG Yi-qian,YAO Jing-chuan   

  1. ( Railway Engineering Research Institute, China Academy of Railway Science, Beijing 100081， China )
  • Received:2010-06-02 Revised:2010-06-17 Online:2011-04-18 Published:2011-04-18
  • Contact: LIU Peng-Hui

摘要： 多孔吸声材料具有吸声系数高、吸声频带宽等优点，采用多孔吸声材料的圆管理论模型，并对此进行数学编程计算与分析，结合工程实际，研究多孔材料孔隙率、孔径、厚度以及结构因子对多孔材料吸声性能的影响，对实际的设计有一定参考价值。

关键词: 声学, 多孔吸声材料, 吸声系数, 孔隙率

Abstract: Porous sound-absorbing materials are widely used because of its high sound absorption coefficient and wide absorption frequency range. In this paper, a model of sound absorption materials is adopted, and the design parameters are computed. The influence of porosity, diameter of holes, thickness and structure of the material on its sound-absorbing property is analyzed. This work provides a reference for the development of new sound-absorbing material.

Key words: acoustics, porous sound-absorbing materials, absorption coefficient, porosity

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