Design of arbitrary shaped pentamode acoustic cloak based on quasi-symmetric mapping gradient algorithm

被引：25

作者：

Chen, Yi ^{[1
]}

Liu, Xiaoning ^{[1
]}

Hua, Gengkai ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2016年 / 140卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Acoustics;

D O I：

10.1121/1.4967347

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Due to solid and broadband nature, pentamode acoustic cloak is more promising for engineering applications. A simple algorithm based on an elasticity equation is proposed to obtain quasi-symmetric mapping gradient and in turn the characteristic stress for arbitrary shape cloaks. A high degree of symmetry of the obtained mapping gradient and nearly perfect cloaking effect of the designed pentamode cloaks are confirmed by numerical examples. The proposed method paves the way to design more complicated transformation devices with pentamode materials. (C) 2016 Acoustical Society of America

引用

页码：EL405 / EL409

页数：5

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