Broadband solid cloak for underwater acoustics

被引：154

作者：

Chen, Yi ^{[1
]}

Zheng, Mingye ^{[1
]}

Liu, Xiaoning ^{[1
]}

Bi, Yafeng ^{[2
]}

Sun, Zhaoyong ^{[2
]}

Xiang, Ping ^{[3
]}

Yang, Jun ^{[2
]}

Hu, Gengkai ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Aerosp Engn, Minist Educ, Key Lab Dynam & Control Flight Vehicle, Beijing 100081, Peoples R China

[2] Chinese Acad Sci, Inst Acoust, Key Lab Noise & Vibrat Res, Beijing 100190, Peoples R China

[3] Syst Engn Res Inst, Beijing 100094, Peoples R China

来源：

PHYSICAL REVIEW B | 2017年 / 95卷 / 18期

关键词：

Underwater acoustics - Shear flow - Waveguides - Microstructure - Anisotropy;

D O I：

10.1103/PhysRevB.95.180104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The application of transformation theory to underwater acoustics has been a challenging task because highly anisotropic density is unachievable in water. A possible strategy is to exploit the anisotropic modulus rather than density, although it has not been experimentally demonstrated. We present an annular underwater acoustic cloak designed from particular graded solid microstructures. The geometry tailored microstructures mimic metafluid with highly anisotropic modulus through substantially suppressed shear waves. Transient wave experiments are conducted with the cloak in a designed two-dimensional underwater waveguide system and proved excellent cloaking performance for an enclosed target over broadband frequencies 9-15 kHz. This finding paves the way for controlling underwater acoustics using the structured anisotropic modulus metafluid.

引用

页数：5

共 41 条

[1] Optical cloaking with metamaterials [J].

Cai, Wenshan ;

Chettiar, Uday K. ;

Kildishev, Alexander V. ;

Shalaev, Vladimir M. .

NATURE PHOTONICS, 2007, 1 (04) :224-227

[2] The mechanical and acoustic properties of two-dimensional pentamode metamaterials with different structural parameters [J].

Cai, Xuan ;

Wang, Lei ;

Zhao, Zhigao ;

Zhao, Aiguo ;

Zhang, Xiangdong ;

Wu, Tao ;

Chen, Hong .

APPLIED PHYSICS LETTERS, 2016, 109 (13)

[3] Acoustic cloaking in three dimensions using acoustic metamaterials [J].

Chen, Huanyang ;

Chan, C. T. .

APPLIED PHYSICS LETTERS, 2007, 91 (18)

[4] Three-dimensional vibration analysis of fluid-filled orthotropic FGM cylindrical shells [J].

Chen, WQ ;

Bian, ZG ;

Ding, HJ .

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2004, 46 (01) :159-171

[5] Design of arbitrary shaped pentamode acoustic cloak based on quasi-symmetric mapping gradient algorithm [J].

Chen, Yi ;

Liu, Xiaoning ;

Hua, Gengkai .

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 2016, 140 (05) :EL405-EL409

[6] Latticed pentamode acoustic cloak [J].

Chen, Yi ;

Liu, Xiaoning ;

Hu, Gengkai .

SCIENTIFIC REPORTS, 2015, 5

[7]

Cipolla J., 2011, J ACOUST SOC AM, V130, P2332, DOI DOI 10.1121/1.3654327

[8] One path to acoustic cloaking [J].

Cummer, Steven A. ;

Schurig, David .

NEW JOURNAL OF PHYSICS, 2007, 9

[9] Experimental Verification of Plasmonic Cloaking at Microwave Frequencies with Metamaterials [J].

Edwards, Brian ;

Alu, Andrea ;

Silveirinha, Mario G. ;

Engheta, Nader .

PHYSICAL REVIEW LETTERS, 2009, 103 (15)

[10] Broadband cylindrical acoustic cloak for linear surface waves in a fluid [J].

Farhat, M. ;

Enoch, S. ;

Guenneau, S. ;

Movchan, A. B. .

PHYSICAL REVIEW LETTERS, 2008, 101 (13)

← 1 2 3 4 5 →