{"title":"周期性圆柱散射体与多孔板混合声晶体的声衰减","authors":"Karisma Mohapatra, D. P. Jena","doi":"10.1007/s40857-021-00239-0","DOIUrl":null,"url":null,"abstract":"<div><p>Acoustic attenuation of a hybrid sonic crystal made with periodic cylindrical scatterers and cascaded porous panels in a broad frequency range is endeavoured in this paper. It is observed via simulations that, the insertion loss (IL) of hybrid configuration is larger than the summation of IL of individual contributors such as periodic scatterers and parallel porous panels in post first Bragg resonance frequency band. The key finding of the research is that the passband in post first Bragg resonance is turning to stopband on introducing the cascaded porous panels within scatterers. Other configurations such as periodic array of cylindrical scatterers in series with porous panels in upstream, downstream and bounded with porous panels are examined and compared. The potential of said claim is shown by investigating a multi-resonant array of scatterers with cascaded porous panels. Finally, the experimental results are presented to authenticate the observed findings of simulations.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"49 3","pages":"441 - 449"},"PeriodicalIF":1.7000,"publicationDate":"2021-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s40857-021-00239-0","citationCount":"6","resultStr":"{\"title\":\"Acoustic Attenuation of Hybrid Sonic Crystal Made with Periodic Cylindrical Scatterers and Porous Panels\",\"authors\":\"Karisma Mohapatra, D. P. Jena\",\"doi\":\"10.1007/s40857-021-00239-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Acoustic attenuation of a hybrid sonic crystal made with periodic cylindrical scatterers and cascaded porous panels in a broad frequency range is endeavoured in this paper. It is observed via simulations that, the insertion loss (IL) of hybrid configuration is larger than the summation of IL of individual contributors such as periodic scatterers and parallel porous panels in post first Bragg resonance frequency band. The key finding of the research is that the passband in post first Bragg resonance is turning to stopband on introducing the cascaded porous panels within scatterers. Other configurations such as periodic array of cylindrical scatterers in series with porous panels in upstream, downstream and bounded with porous panels are examined and compared. The potential of said claim is shown by investigating a multi-resonant array of scatterers with cascaded porous panels. Finally, the experimental results are presented to authenticate the observed findings of simulations.</p></div>\",\"PeriodicalId\":54355,\"journal\":{\"name\":\"Acoustics Australia\",\"volume\":\"49 3\",\"pages\":\"441 - 449\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2021-05-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1007/s40857-021-00239-0\",\"citationCount\":\"6\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acoustics Australia\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s40857-021-00239-0\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acoustics Australia","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s40857-021-00239-0","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Acoustic Attenuation of Hybrid Sonic Crystal Made with Periodic Cylindrical Scatterers and Porous Panels
Acoustic attenuation of a hybrid sonic crystal made with periodic cylindrical scatterers and cascaded porous panels in a broad frequency range is endeavoured in this paper. It is observed via simulations that, the insertion loss (IL) of hybrid configuration is larger than the summation of IL of individual contributors such as periodic scatterers and parallel porous panels in post first Bragg resonance frequency band. The key finding of the research is that the passband in post first Bragg resonance is turning to stopband on introducing the cascaded porous panels within scatterers. Other configurations such as periodic array of cylindrical scatterers in series with porous panels in upstream, downstream and bounded with porous panels are examined and compared. The potential of said claim is shown by investigating a multi-resonant array of scatterers with cascaded porous panels. Finally, the experimental results are presented to authenticate the observed findings of simulations.
期刊介绍：
Acoustics Australia, the journal of the Australian Acoustical Society, has been publishing high quality research and technical papers in all areas of acoustics since commencement in 1972. The target audience for the journal includes both researchers and practitioners. It aims to publish papers and technical notes that are relevant to current acoustics and of interest to members of the Society. These include but are not limited to: Architectural and Building Acoustics, Environmental Noise, Underwater Acoustics, Engineering Noise and Vibration Control, Occupational Noise Management, Hearing, Musical Acoustics.
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