剪切水平导波在非对称结构中的不对称传播特性

Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2014-12-29 DOI:10.1109/SPAWDA.2014.6998606

Jiujiu Chen, Guang-huang Song, Sheng-tao Yi, Xu Han

{"title":"剪切水平导波在非对称结构中的不对称传播特性","authors":"Jiujiu Chen, Guang-huang Song, Sheng-tao Yi, Xu Han","doi":"10.1109/SPAWDA.2014.6998606","DOIUrl":null,"url":null,"abstract":"The cut-off frequency of higher modes of shear horizontal (SH) guided wave propagating in a plate depends on the thickness due to dispersive characteristic. Through numerical simulation of the first higher (SH1) mode of SH guided wave propagation in an asymmetric structure, we have realized sound unidirectional transmission based on breaking spatial inversion symmetry. It demonstrated that when the SH1 mode are launched into the system from the left side, it mostly converts to the fundamental mode in the defected region and attain a high transmission; on the contrary, when the waves are incident from the right side, the conversion is weak, most SH1 mode is reflected and the transmission is low. This asymmetric system should be potentially significant in putting to good use in a variety of applications.","PeriodicalId":412736,"journal":{"name":"Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"2 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2014-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The asymmetrical transmission characteristics of shear horizontal guided wave in an asymmetricalstructure\",\"authors\":\"Jiujiu Chen, Guang-huang Song, Sheng-tao Yi, Xu Han\",\"doi\":\"10.1109/SPAWDA.2014.6998606\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The cut-off frequency of higher modes of shear horizontal (SH) guided wave propagating in a plate depends on the thickness due to dispersive characteristic. Through numerical simulation of the first higher (SH1) mode of SH guided wave propagation in an asymmetric structure, we have realized sound unidirectional transmission based on breaking spatial inversion symmetry. It demonstrated that when the SH1 mode are launched into the system from the left side, it mostly converts to the fundamental mode in the defected region and attain a high transmission; on the contrary, when the waves are incident from the right side, the conversion is weak, most SH1 mode is reflected and the transmission is low. This asymmetric system should be potentially significant in putting to good use in a variety of applications.\",\"PeriodicalId\":412736,\"journal\":{\"name\":\"Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications\",\"volume\":\"2 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2014-12-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/SPAWDA.2014.6998606\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SPAWDA.2014.6998606","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

摘要

高模态剪切水平导波在板内传播的截止频率取决于板的厚度和色散特性。通过数值模拟SH导波在非对称结构中传播的第一阶高(SH1)模式，实现了基于打破空间反演对称的声音单向传播。结果表明，当SH1模从左侧发射到系统中时，SH1模在缺陷区大多转换为基模，获得高传输率;相反，当波从右侧入射时，转换较弱，大部分SH1模式被反射，透射率较低。这种不对称系统在各种应用程序中应该具有潜在的重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

The asymmetrical transmission characteristics of shear horizontal guided wave in an asymmetricalstructure

The cut-off frequency of higher modes of shear horizontal (SH) guided wave propagating in a plate depends on the thickness due to dispersive characteristic. Through numerical simulation of the first higher (SH1) mode of SH guided wave propagation in an asymmetric structure, we have realized sound unidirectional transmission based on breaking spatial inversion symmetry. It demonstrated that when the SH1 mode are launched into the system from the left side, it mostly converts to the fundamental mode in the defected region and attain a high transmission; on the contrary, when the waves are incident from the right side, the conversion is weak, most SH1 mode is reflected and the transmission is low. This asymmetric system should be potentially significant in putting to good use in a variety of applications.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications

自引率

0.00%

发文量