Rectification effect on solitary waves in the symmetric Y-shaped granular chaind
Rectification effect on solitary waves in the symmetric Y-shaped granular chaind
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对称Y形粒链中孤立波的整流效应
DOI：
10.1007/s10035-017-0739-0
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发表时间：
2017
期刊：
影响因子：
2.4
通讯作者：
Huang Decai
中科院分区：
文献类型：
--
作者：
Liu Xingyi;Jiao Tengfei;Ma Liang;Su Jiaye;Chen Weizhong;Sun Qicheng;Huang Decai
数值研究了对称Y型颗粒链中的整流效应对孤立波传播的影响。通过调节分支角，在Y结处产生了具有质量失配的异质结。而轻重异质结更有利于孤波的传播。根据波的传播速度和能隙的张开特性，我们认为非线性效应和碰撞效应共同主导了整流过程。通过调整分支角度和孤波入射方向可以提高整流效率。研究结果对声二极管器件的潜在设计具有重要的实际意义。
The rectification effect on the propagation of solitary waves in the symmetric Y-shaped granular chain is numerically investigated. A heterojunction with mass mismatch occurs at the position of Y-junction by adjusting the branch angle. And the heavy-light heterojunction is more favorable for the solitary wave passing. Based on the characteristics of wave propagation velocity and gap’s opening, we argue that both nonlinearity and collision effects dominate the rectification process. The rectification efficiency can be improved by adjusting the branch angle and the direction of incident solitary wave. The results have particularly practical significance for the potential design of acoustic diode devices.