| 用各向同性材料实现宽带声波功能器件设计 |
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| 引用本文： | 任春雨,向志海,岑章志.用各向同性材料实现宽带声波功能器件设计[J].固体力学学报,2011(Z1). |
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| 作者姓名： | 任春雨 向志海 岑章志 |
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| 作者单位： | 清华大学航天航空学院工程力学系;海军工程大学船舶与海洋工程系; |
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| 摘 要： | 利用坐标变换的方法并结合保角映射技术,论文介绍了一种利用常规的各向同性材料来设计声波器件的方法.基于此理论,设计了二维声波隐身斗篷,并进行有限元模拟,证明了该器件的有效性.另外由于设计中没有利用材料共振的性质,所以器件是宽带有效的.该方法将有助于拓宽声波功能器件的设计,并为实验验证声波器件提供了可能.
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| 关 键 词： | 保角坐标变换方法 声波器件设计 隐身斗篷 |
BROADBAND ACOUSTIC DEVICE DESIGNS WITH ISOTROPIC MATERIALS |
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| Chunyu Ren, Zhihai Xiang Zhangzhi Cen.BROADBAND ACOUSTIC DEVICE DESIGNS WITH ISOTROPIC MATERIALS[J].Acta Mechnica Solida Sinica,2011(Z1). |
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| Authors: | Chunyu Ren Zhihai Xiang Zhangzhi Cen |
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| Institution: | Chunyu Ren1,2 Zhihai Xiang1 Zhangzhi Cen1(1 AML,Department of Engineering Mechanics,Tsinghua University,Beijing,100084)(2 Department of Naval Architecture and Ocean Engineering,Naval University of Engineering,Wuhan,430033) |
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| Abstract: | By merging the transformation acoustics and conformal mapping technique,we demonstrate one path to design acoustic devices with isotropic materials.Based on this method,we design a wedge-shaped acoustic cloak.The finite element simulation verifies not only the invisibility of such a cloak,but also its broadband performance.We believe this method can be generalized to design more applicable acoustic devices. |
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| Keywords: | conformal transformation method acoustic devices design invisibility cloak |
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