ACOUSTIC INSULATION PROVIDED BY A SINGLE WALL SEPARATING TWO CONTIGUOUS TUNNELS VIA BEM

Detalhes bibliográficos
Autor(a) principal: Santos, P.
Data de Publicação: 2002
Outros Autores: Tadeu, A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/4010
Resumo: This paper describes the computation of the acoustic insulation provided by a single simple wall separating two contiguous tunnels when a steady state, spatially sinusoidal, harmonic line load pressure excites one of the tunnels. The Boundary Element Method (BEM), formulated in the frequency domain, is used to compute the acoustic pressure in the two tunnels. The insulation conferred by the wall is characterized, identifying the location of insulation dips in the frequency domain with those dips related to its own natural dynamic vibration modes and those related to the natural vibration modes of the tunnels. This model is also used to assess how the dimension of the rooms, and the rigidity and thickness of the wall affect acoustic insulation. The transmission loss results obtained via the BEM are then compared with those provided by simplified analytical models such as the mass law.
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spelling ACOUSTIC INSULATION PROVIDED BY A SINGLE WALL SEPARATING TWO CONTIGUOUS TUNNELS VIA BEMThis paper describes the computation of the acoustic insulation provided by a single simple wall separating two contiguous tunnels when a steady state, spatially sinusoidal, harmonic line load pressure excites one of the tunnels. The Boundary Element Method (BEM), formulated in the frequency domain, is used to compute the acoustic pressure in the two tunnels. The insulation conferred by the wall is characterized, identifying the location of insulation dips in the frequency domain with those dips related to its own natural dynamic vibration modes and those related to the natural vibration modes of the tunnels. This model is also used to assess how the dimension of the rooms, and the rigidity and thickness of the wall affect acoustic insulation. The transmission loss results obtained via the BEM are then compared with those provided by simplified analytical models such as the mass law.http://www.sciencedirect.com/science/article/B6WM3-473FKD4-8/1/a0726723e8ba80d8c8bd662f2cddf8e52002info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/4010http://hdl.handle.net/10316/4010engJournal of Sound and Vibration. 257:5 (2002) 945-965Santos, P.Tadeu, A.info: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:RCAAP2020-05-25T11:38:22Zoai:estudogeral.uc.pt:10316/4010Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:57:13.120100Repositório 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 ACOUSTIC INSULATION PROVIDED BY A SINGLE WALL SEPARATING TWO CONTIGUOUS TUNNELS VIA BEM
title ACOUSTIC INSULATION PROVIDED BY A SINGLE WALL SEPARATING TWO CONTIGUOUS TUNNELS VIA BEM
spellingShingle ACOUSTIC INSULATION PROVIDED BY A SINGLE WALL SEPARATING TWO CONTIGUOUS TUNNELS VIA BEM
Santos, P.
title_short ACOUSTIC INSULATION PROVIDED BY A SINGLE WALL SEPARATING TWO CONTIGUOUS TUNNELS VIA BEM
title_full ACOUSTIC INSULATION PROVIDED BY A SINGLE WALL SEPARATING TWO CONTIGUOUS TUNNELS VIA BEM
title_fullStr ACOUSTIC INSULATION PROVIDED BY A SINGLE WALL SEPARATING TWO CONTIGUOUS TUNNELS VIA BEM
title_full_unstemmed ACOUSTIC INSULATION PROVIDED BY A SINGLE WALL SEPARATING TWO CONTIGUOUS TUNNELS VIA BEM
title_sort ACOUSTIC INSULATION PROVIDED BY A SINGLE WALL SEPARATING TWO CONTIGUOUS TUNNELS VIA BEM
author Santos, P.
author_facet Santos, P.
Tadeu, A.
author_role author
author2 Tadeu, A.
author2_role author
dc.contributor.author.fl_str_mv Santos, P.
Tadeu, A.
description This paper describes the computation of the acoustic insulation provided by a single simple wall separating two contiguous tunnels when a steady state, spatially sinusoidal, harmonic line load pressure excites one of the tunnels. The Boundary Element Method (BEM), formulated in the frequency domain, is used to compute the acoustic pressure in the two tunnels. The insulation conferred by the wall is characterized, identifying the location of insulation dips in the frequency domain with those dips related to its own natural dynamic vibration modes and those related to the natural vibration modes of the tunnels. This model is also used to assess how the dimension of the rooms, and the rigidity and thickness of the wall affect acoustic insulation. The transmission loss results obtained via the BEM are then compared with those provided by simplified analytical models such as the mass law.
publishDate 2002
dc.date.none.fl_str_mv 2002
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/4010
http://hdl.handle.net/10316/4010
url http://hdl.handle.net/10316/4010
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Sound and Vibration. 257:5 (2002) 945-965
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv aplication/PDF
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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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
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