SOUND-ABSORPTION IN AN ANISOTROPIC PERIODICALLY LAYERED FLUID-SATURATED POROUS-MEDIUM

被引：13

作者：

SUN, F

BANKSLEE, P

PENG, H

机构：

[1] North Carolina State University, College of Textiles, Raleigh, NC 27695

来源：

APPLIED ACOUSTICS | 1993年 / 39卷 / 1-2期

关键词：

D O I：

10.1016/0003-682X(93)90030-A

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A study was made of harmonic plane wave propagation through an anisotropic, periodically layered, fluid-saturated, porous medium. Biot's theory was used to describe the constitutive equations of a fluid-saturated porous solid. Employing the idea of introducing fundamental elasticity tensors, the field equations governing the wave propagation were derived in terms of first-order ordinary differential equations. Propagator matrix formulation was adopted to treat the periodically layered property. The reflection at oblique incidence between fluid and a fluid-saturated material, backed by a rigid impervious surface, was determined and the sound-absorption coefficient of the material was obtained. The calculated results agree well with the experimental results.

引用

页码：65 / 76

页数：12

共 10 条

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