Locally resonant phononic woodpile: A wide band anomalous underwater acoustic absorbing material

被引：95

作者：

Jiang, Heng ^{[1
,2
]}

Wang, Yuren ^{[2
]}

Zhang, Milin ^{[1
]}

Hu, Yanping ^{[2
]}

Lan, Ding ^{[2
]}

Zhang, Yinmin ^{[2
]}

Wei, Bingchen ^{[2
]}

机构：

[1] Harbin Engn Univ, Minist Educ, Key Lab Superlight Mat & Surface Technol, Harbin 150001, Peoples R China

[2] Chinese Acad Sci, Inst Mech, Key Lab Micrograv Sci, Beijing 100190, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 10期

基金：

中国国家自然科学基金;

关键词：

acoustic materials; acoustic wave absorption; phononic crystals; underwater sound; FREQUENCY-RANGE; INFRARED WAVELENGTHS; ANECHOIC COATINGS; SONIC MATERIALS; ELASTIC WAVES; CRYSTALS; PROPAGATION; ABSORPTION; GAPS;

D O I：

10.1063/1.3216805

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

To meet the demand of modern acoustic absorbing material for which acoustic absorbing frequency region can be readily tailored, we introduced woodpile structure into locally resonant phononic crystal (LRPC) and fabricated an underwater acoustic absorbing material, which is called locally resonant phononic woodpile (LRPW). Experimental results show that LRPW has a strong capability of absorbing sound in a wide frequency range. Further theoretical research revealed that LRPC units and woodpile structure in LRPW play an important role in realization of wide band underwater strong acoustic absorption.

引用

页数：3

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