A FINITE-ELEMENT MODEL FOR ACOUSTICALLY LINED SMALL ROOMS

被引：47

作者：

CRAGGS, A

机构：

[1] Univ of Alberta, Edmonton, Alberta,, Can, Univ of Alberta, Edmonton, Alberta, Can

来源：

JOURNAL OF SOUND AND VIBRATION | 1986年 / 108卷 / 02期

关键词：

MATHEMATICAL TECHNIQUES - Finite Element Method;

D O I：

10.1016/S0022-460X(86)80059-1

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A simple theory for representing a foam absorbing material is presented in terms of the static resitivity and the effective density. The theory is verified by some experimental data. A finite element model is then formulated and a study is made of the effects of a lining on the acoustic response inside a partially lined rectangular enclosure. As the model is specifically aimed at the effects of absorption on the lower acoustic modes, and complex geometries may be represented, the method should find applications in vehicle interior noise prediction.

引用

页码：327 / 337

页数：11

共 9 条

[1]

BEES DA, 1971, NOISE VIBRATION CONT, pCH10

[2] Acoustic impedance of porous materials [J].