多孔泡沫材料的声吸收特性

卢天健 1; Iain D. J. Dupè; re 2; Ann P. Dowling 2

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多孔泡沫材料的声吸收特性

专题研究 | 更新时间：2025-12-08

- 多孔泡沫材料的声吸收特性
- Absorption of Sound in Cellular Foams
- 西安交通大学学报 2007年41卷第9期页码：1003-1011
- 作者机构：
  
  西安交通大学强度与振动教育部重点实验室,西安,710049
- 作者简介：
- 基金信息：
  
  : 2007-04-10. 作者简介: 卢天健(1962～),男,教授,博士生导师. 基金项目: 国家重点基础研究发展规划资助项目(2006CB601202);国家高技术研究发展计划资助项目(2006AA03Z519);国家自然科学基金资助项目(10572111,10632060);教育部高等学校学科创新引智计划资助项目(B06024)
- DOI：
  中图分类号： TG132.6;TG146.21
- 网络首发：2007-09-10，
  
  纸质出版：2007
- 稿件说明：
移动端阅览
卢天健 1, Iain D. J. Dupè, re 2, 等. 多孔泡沫材料的声吸收特性[J]. 西安交通大学学报, 2007,41(9):1003-1011.

卢天健 1, Iain D. J. Dupè, re 2, et al. Absorption of Sound in Cellular Foams[J]. 2007, 41(9): 1003-1011.
卢天健 1, Iain D. J. Dupè, re 2, 等. 多孔泡沫材料的声吸收特性[J]. 西安交通大学学报, 2007,41(9):1003-1011. DOI：

卢天健 1, Iain D. J. Dupè, re 2, et al. Absorption of Sound in Cellular Foams[J]. 2007, 41(9): 1003-1011. DOI：

摘要

为了结合泡沫金属兼有的高吸声和高热传导两种特性以进一步提高其吸声性能

回顾了泡沫金属材料的应用和声学建模; 通过对泡沫金属和用于制造泡沫金属的高分子基体材料的实验

比较了作者提出的声波通过泡沫金属传播的3种黏滞模型的预测结果

表明所有模型在泡沫金属典型胞元尺寸所对应的低雷诺数范围内是有效的(假定声波为线性

幅值低于160 dB).第一种模型考虑了声波沿平行于刚性圆柱束轴线方向传播时所受到的空气曳力

第二种模型考虑了声波沿垂直于刚性圆柱束轴线方向的传播

第三种模型考虑了声波通过球形节点的传播.结合这3种模型

提出了一种泡沫金属声学性能的综合模型

可以用来预测泡沫金属的声吸收特性.此外

还介绍了一种用于泡沫金属材料基本声传播特性实验的后处理技术.

Abstract

To further enhance the sound absorption of metal foams via combining the high sound absorption and good heat conductivity of the cellular foam metals

the use and acoustic modeling of these materials are reviewed. The predictions made by three viscous models developed by the authors for the propagation of sound through open-cell metal foams are compared with an experiment both for the metal foams and for the polymer substrates used to manufacture the foam. All models are valid in the limit of low Reynold's number which is valid for the typical cell dimensions found in metal foams provided the amplitude of the waves is below 160 dB. The first model considers the drag experienced by acoustic waves as they propagate passing rigid cylinders parallel to their axes

the second considers the propagation normal to their axes

and the third considers the propagation passing the spherical joints. All three are combined together to give a general model of the acoustic behavior of the foams. In particular

the sound absorption is found to be significant and well predicted by the combined model. In addition

a post-processing technique is described for the experiment used to extract the fundamental wave propagation characteristics of the material.

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references

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