Broad omnidirectional acoustic band gaps in a three-dimensional phononic crystal composed of face-centered cubic Helmholtz resonator network

被引：7

作者：

Bicer, Ahmet ^{[1
]}

Korozlu, Nurettin ^{[2
]}

Kaya, Olgun A. ^{[3
]}

Cicek, Ahmet ^{[2
]}

机构：

[1] Burdur Mehmet Akif Ersoy Univ, Golhisar Hlth Serv Vocat High Sch, Opticiamy Programme, TR-15400 Burdur, Turkey

[2] Burdur Mehmet Akif Ersoy Univ, Fac Arts & Sci, Dept Nanosci & Nanotechnol, TR-15030 Burdur, Turkey

[3] Inonu Univ, Fac Educ, Dept Comp Educ & Educ Technol, TR-44280 Malatya, Turkey

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2021年 / 150卷 / 03期

关键词：

D O I：

10.1121/10.0006043

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Broad omnidirectional band gaps in a three-dimensional phononic crystal consisting of a face-centered cubic array of spherical air voids connected by cylindrical conduits in solid background are numerically and experimentally demonstrated. With a low material filling fraction of 37.7%, the first bandgap covers 3.1-13.6 kHz frequency range with 126.1% gap-over-midgap ratio. Finite-element method is employed in band structure and numerical transmission analyses. Omnidirectional band gaps are observed in only two-period thick slabs in the 100, 110, and 111 orientations. Experimental transmission characteristics are in good agreement with numerical data. The phononic crystal can be employed in low-frequency sound proofing.& nbsp;(C) 2021 Acoustical Society of America</p>

引用

页码：1591 / 1596

页数：6

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