多孔吸声材料的吸声特性研究

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.%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.