Sound Waves in a Medium with Resonance Inclusions of a Dipole Type

IF 0.9 4区物理与天体物理 Q4 ACOUSTICS

Acoustical Physics Pub Date : 2024-11-27 DOI:10.1134/S106377102460181X

N. G. Kanev, M. A. Mironov

引用次数: 0

Abstract

An elastic medium with inclusions that are small compared to the sound wavelength and differ in density is considered. If the inclusions are resonators that respond equally to the influence of waves coming from different directions, then the effective density of the medium in a certain frequency band becomes negative. If the direction of the dipole moment of the resonators is fixed, then the medium with inclusions has an anisotropic effective density. The Helmholtz equation for such a medium was obtained, and the field of a point source was studied.

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带有偶极型共振内含物的介质中的声波

我们考虑了一种弹性介质，该介质的内含物与声波波长相比很小，且密度不同。如果夹杂物是共振器，对来自不同方向的波的影响反应相同，那么介质在某一频段的有效密度就会变为负值。如果谐振器偶极矩的方向固定不变，则带有夹杂物的介质具有各向异性的有效密度。我们得到了这种介质的亥姆霍兹方程，并对点源场进行了研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acoustical Physics 物理-声学

CiteScore

1.60

自引率

50.00%

发文量

审稿时长

3.5 months

期刊介绍： Acoustical Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It covers theoretical and experimental aspects of basic and applied acoustics: classical problems of linear acoustics and wave theory; nonlinear acoustics; physical acoustics; ocean acoustics and hydroacoustics; atmospheric and aeroacoustics; acoustics of structurally inhomogeneous solids; geological acoustics; acoustical ecology, noise and vibration; chamber acoustics, musical acoustics; acoustic signals processing, computer simulations; acoustics of living systems, biomedical acoustics; physical principles of engineering acoustics. The journal publishes critical reviews, original articles, short communications, and letters to the editor. It covers theoretical and experimental aspects of basic and applied acoustics. The journal welcomes manuscripts from all countries in the English or Russian language.