Harnessing Deformation to Switch On and Off the Propagation of Sound
Harnessing Deformation to Switch On and Off the Propagation of Sound
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DOI：
10.1002/adma.201504469
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发表时间：
2016-02-24
影响因子：
29.4
通讯作者：
Bertoldi, Katia
中科院分区：
文献类型：
--
作者：
Babaee, Sahab;Viard, Nicolas;Bertoldi, Katia
一种新型的建筑材料被设计用来控制声音的传播。该系统由背景空气中的弹性螺旋线阵列组成，其特点是在未变形的构型中具有较强的波衰减(带隙)频率范围。当螺旋线轴向拉伸时，这样的带隙被抑制，从而能够设计出一种新的声学开关。
A new class of architected materials is designed to control the propagation of sound. The proposed system comprises an array of elastomeric helices in background air and is characterized by frequency ranges of strong wave attenuation (bandgaps) in the undeformed configuration. Upon axially stretching the helices, such bandgaps are suppressed, enabling the design of a new class of acoustic switch.