Mechanisms of Acoustic Surface Wave Generation by Rigid Cyllinder Arrays

Detalhes bibliográficos
Autor(a) principal: Berry, David
Data de Publicação: 2019
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/27228
Resumo: The propagation of an acoustic impulse over a surface constructed from regularly spaced rigid cylinders on a rigid plane has been simulated using multiple scattering theory. The simulations show that the surface causes a complex signal comprising a main pulse and a tail. The tail has a rich frequency spectrum with peaks that can, in general, be interpreted using Bragg diffraction theory. However, this interpretation is not valid for the lowest frequency peak. The spacing between the rigid pipes generates an “organ-pipe” type resonance. Above a height corresponding to three times the cylinder diameter these resonances combine to form a signal, demonstrating the characteristics of a surface wave. Results of experimental measurements confirm this interpretation.
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spelling Mechanisms of Acoustic Surface Wave Generation by Rigid Cyllinder ArraysPhysical AcousticsAcoustic Propagation and ScatteringMetamaterialsNoise ControlThe propagation of an acoustic impulse over a surface constructed from regularly spaced rigid cylinders on a rigid plane has been simulated using multiple scattering theory. The simulations show that the surface causes a complex signal comprising a main pulse and a tail. The tail has a rich frequency spectrum with peaks that can, in general, be interpreted using Bragg diffraction theory. However, this interpretation is not valid for the lowest frequency peak. The spacing between the rigid pipes generates an “organ-pipe” type resonance. Above a height corresponding to three times the cylinder diameter these resonances combine to form a signal, demonstrating the characteristics of a surface wave. Results of experimental measurements confirm this interpretation.Institute of Acoustics2020-02-26T11:15:54Z2020-02-262019-05-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/27228http://hdl.handle.net/10174/27228porBerry, D., Taherzadeh, S., & Attenborough, K., "Mechanisms of Acoustic Surface Wave Generation by Rigid Cyllinder Arrays", Proceedings of Acoustics 2019, pp 101-108, 2019.https://www.ioa.org.uk/civicrm/event/infodberry@uevora.pt344Berry, Davidinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:22:32Zoai:dspace.uevora.pt:10174/27228Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:17:19.286947Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Mechanisms of Acoustic Surface Wave Generation by Rigid Cyllinder Arrays
title Mechanisms of Acoustic Surface Wave Generation by Rigid Cyllinder Arrays
spellingShingle Mechanisms of Acoustic Surface Wave Generation by Rigid Cyllinder Arrays
Berry, David
Physical Acoustics
Acoustic Propagation and Scattering
Metamaterials
Noise Control
title_short Mechanisms of Acoustic Surface Wave Generation by Rigid Cyllinder Arrays
title_full Mechanisms of Acoustic Surface Wave Generation by Rigid Cyllinder Arrays
title_fullStr Mechanisms of Acoustic Surface Wave Generation by Rigid Cyllinder Arrays
title_full_unstemmed Mechanisms of Acoustic Surface Wave Generation by Rigid Cyllinder Arrays
title_sort Mechanisms of Acoustic Surface Wave Generation by Rigid Cyllinder Arrays
author Berry, David
author_facet Berry, David
author_role author
dc.contributor.author.fl_str_mv Berry, David
dc.subject.por.fl_str_mv Physical Acoustics
Acoustic Propagation and Scattering
Metamaterials
Noise Control
topic Physical Acoustics
Acoustic Propagation and Scattering
Metamaterials
Noise Control
description The propagation of an acoustic impulse over a surface constructed from regularly spaced rigid cylinders on a rigid plane has been simulated using multiple scattering theory. The simulations show that the surface causes a complex signal comprising a main pulse and a tail. The tail has a rich frequency spectrum with peaks that can, in general, be interpreted using Bragg diffraction theory. However, this interpretation is not valid for the lowest frequency peak. The spacing between the rigid pipes generates an “organ-pipe” type resonance. Above a height corresponding to three times the cylinder diameter these resonances combine to form a signal, demonstrating the characteristics of a surface wave. Results of experimental measurements confirm this interpretation.
publishDate 2019
dc.date.none.fl_str_mv 2019-05-01T00:00:00Z
2020-02-26T11:15:54Z
2020-02-26
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10174/27228
http://hdl.handle.net/10174/27228
url http://hdl.handle.net/10174/27228
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Berry, D., Taherzadeh, S., & Attenborough, K., "Mechanisms of Acoustic Surface Wave Generation by Rigid Cyllinder Arrays", Proceedings of Acoustics 2019, pp 101-108, 2019.
https://www.ioa.org.uk/civicrm/event/info
dberry@uevora.pt
344
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Institute of Acoustics
publisher.none.fl_str_mv Institute of Acoustics
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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