Sound Absorption Model of Sintered Fibrous Metal

张波; 陈天宁

您当前的位置：

首页 >

文章列表页 >

Sound Absorption Model of Sintered Fibrous Metal

更新时间：2025-12-08

- Sound Absorption Model of Sintered Fibrous Metal
- Vol. 42, Issue 3, Pages: 328-332(2008)
- 作者机构：
  
  西安交通大学机械工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TG146.21
- Online First：10 March 2008，
  
  Published：2008
- 稿件说明：
移动端阅览
张波, 陈天宁. Sound Absorption Model of Sintered Fibrous Metal[J]. 2008, 42(3): 328-332.
DOI：

张波, 陈天宁. Sound Absorption Model of Sintered Fibrous Metal[J]. 2008, 42(3): 328-332. DOI：

摘要

根据金属骨架多孔材料的特点

在Biot-Allard刚性骨架多孔材料内流吸声模型的基础上

考虑金属的热导特性

推导出一种新的、形式较简单的有效体积模量表达式

从而得到了一种扩展的吸声模型. 利用该扩展吸声模型对单层烧结不锈钢金属纤维板、2层及3层梯度组合金属纤维板的吸声特性进行了理论计算

并进行了相应的实验测试.研究结果表明

金属骨架对材料低频段的声吸收具有一定的强化作用

烧结作用使得纤维小幅振动对材料声吸收的贡献减小

与Biot-Allard模型相比

采用扩展模型计算出的烧结金属纤维材料的吸声特性理论结果与实验测试值在总体上更为一致

尤其是对高频段表面声阻抗率的计算.

Abstract

According to the characters of porous metals

a new effective bulk modulus formula with simpler expression was obtained by considering the heat exchange between the metallic skeleton and air in pore on the basis of phenomenological Biot-Allard model

therefore an extended sound absorption model was put forward. The sound absorption characteristics of one-layer fibrous metal sheets

two-layer-assembled

and three-layer-assembled fibrous metal sheets were theoretically evaluated via the extended model. The corresponding acoustic measurements were performed and compared with the numerical results. It is found that the sound absorption in fibrous metal is somewhat enhanced due to the effect of metallic skeleton

and the sound absorption induced by the fiber vibrating of small amplitude is weakened due to the sintering process. Compared with the results from Biot-Allard model

theresults from the extended model coincide better with the measurement

especially for the surface acoustic impedances at higher frequencies.

关键词

Keywords

references

DELANY M E, BAZLEY E N. Acoustical properties of fibrous materials [J]. Applied Acoustics,1970, 3(2):105-116.

BIOT M A. Theory of propagation of elastic waves in a fluid-saturated porous solid [J]. J Acoust Soc Am, 1955, 28(2): 168-191.

WILSON D K. Relaxation-matched modeling of propagation through porous media, including fractal pore structure [J] J Acoust Soc Am,1993, 94(2): 1136-1145.

ALLARD J F. Propagation of sound in porous media modeling sound absorbing materials [M]. New York: Elsevier Applied Science, 1993:76-77.

ZWIKKER C,KOSTEN C W. Sound absorbing materials [M]. New York: Elsevier, 1949:30-33.

JOHNSON D L, KOPLIK J, DASHEN R. Theory of dynamic permeability and tortuosity in fluid-saturated porous media [J]. J Fluid Mechanics, 1987,176(1):379-402.

TARNOW V. Compressibility of air in fibrous materials[J]. J Acoust Soc Am, 1996,99(5): 3010-3017.

DUPERE I D J, DOWLING A P, LU Tianjian. The absorption of sound in cellular foams[C]∥ASME International Mechanical Engineering Congress and RDD Expo. New York: American Society of Mechanical Engineers, 2004:123-132.

ATTENBOROUGH K, WALKER L A. Scattering theory for sound absorption in fibrous media [J]. J Acoust Soc Am, 1971, 49(5):1331-1338.

UMNOVA O,ATTENBOROUGH K. Deduction of tortuosity and porosity from acoustic reflection and transmission measurements on thick samples of rigid-porous materials [J]. Applied Acoustics,2005, 66(6): 607-624.

杨世铭,陶文铨.传热学 [M].第4版. 北京:高等教育出版社,2006:250.

CHAMPOUX Y, STINSON M R. On acoustical models for sound propagation in rigid frame porous materials and the influence of shape factors [J]. J Acoust Soc Am, 1992, 92(2): 1120-1131.

STINSON M R. The propagation of plane sound waves in narrow and wide circular tubes, and generalization to uniform tubes of arbitrary cross-section shape [J]. J Acoust Soc Am, 1991,89(2): 550-558.

KAWASIMA Y. Sound propagation in a fiber block as a composite medium [J]. Acustica,1960,10:208-217.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Effects of Expansion Angle Crater Film Hole on the Film Cooling Characteristics of a Double-Wall Structure

Research on the Electrohydrodynamic Effects of Ionic Liquid-Modified Fuels

Study on the Thermodynamic Properties in the Anomalous Region of Supercritical Water

Knowledge Graph Representation Learning Driven by Semantic Discrimination and Subgraph Integration

Integrated and Joint Design Optimization of Centrifugal Compressor Impeller and Casing Treatment at Multiple Working Points

Related Author

No data

Related Institution

No data

⁰