Assessing the effect of a barrier between two rooms subjected to low frequency sound using the boundary element method
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/4005 https://doi.org/10.1016/S0003-682X(02)00074-9 |
Resumo: | The boundary element method (BEM) has been used to compute the acoustic wave propagation through a single vertical panel, which separates two rooms, made of concrete, when one of the rooms is excited by a steady-state, spatially sinusoidal, harmonic line load pressure at low frequencies. This work focuses on how the connection of the panel to the ceiling affects the acoustic insulation provided by the wall. Perfect double-fixed partitions and acoustic barrier-type structures with differently-sized gaps between the ceiling and the barrier are studied. The BEM model is formulated in the frequency domain and takes the air-solid interaction fully into account. Insulation dips are localised in the frequency domain and identified with dips associated with both the wall's natural dynamic vibration modes and with those associated with the air in the rooms. The influence of the wall's thickness on acoustic insulation is also analysed. The computed results obtained with the acoustic barrier type structure are compared with those obtained by a rigid model. The importance of the rooms' surface conditions is assessed, modelling the rooms with cork. |
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7160 |
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Assessing the effect of a barrier between two rooms subjected to low frequency sound using the boundary element methodAcoustic insulationBoundary elements methodAcoustic barrierThe boundary element method (BEM) has been used to compute the acoustic wave propagation through a single vertical panel, which separates two rooms, made of concrete, when one of the rooms is excited by a steady-state, spatially sinusoidal, harmonic line load pressure at low frequencies. This work focuses on how the connection of the panel to the ceiling affects the acoustic insulation provided by the wall. Perfect double-fixed partitions and acoustic barrier-type structures with differently-sized gaps between the ceiling and the barrier are studied. The BEM model is formulated in the frequency domain and takes the air-solid interaction fully into account. Insulation dips are localised in the frequency domain and identified with dips associated with both the wall's natural dynamic vibration modes and with those associated with the air in the rooms. The influence of the wall's thickness on acoustic insulation is also analysed. The computed results obtained with the acoustic barrier type structure are compared with those obtained by a rigid model. The importance of the rooms' surface conditions is assessed, modelling the rooms with cork.http://www.sciencedirect.com/science/article/B6V1S-47731SS-1/1/c60b00bee311c281f6bbe37b7f24ac3d2003info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/4005http://hdl.handle.net/10316/4005https://doi.org/10.1016/S0003-682X(02)00074-9engApplied Acoustics. 64:3 (2003) 287-310Tadeu, A.Santos, P.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:RCAAP2020-11-06T16:59:26Zoai:estudogeral.uc.pt:10316/4005Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:57:11.406420Repositório 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 |
Assessing the effect of a barrier between two rooms subjected to low frequency sound using the boundary element method |
title |
Assessing the effect of a barrier between two rooms subjected to low frequency sound using the boundary element method |
spellingShingle |
Assessing the effect of a barrier between two rooms subjected to low frequency sound using the boundary element method Tadeu, A. Acoustic insulation Boundary elements method Acoustic barrier |
title_short |
Assessing the effect of a barrier between two rooms subjected to low frequency sound using the boundary element method |
title_full |
Assessing the effect of a barrier between two rooms subjected to low frequency sound using the boundary element method |
title_fullStr |
Assessing the effect of a barrier between two rooms subjected to low frequency sound using the boundary element method |
title_full_unstemmed |
Assessing the effect of a barrier between two rooms subjected to low frequency sound using the boundary element method |
title_sort |
Assessing the effect of a barrier between two rooms subjected to low frequency sound using the boundary element method |
author |
Tadeu, A. |
author_facet |
Tadeu, A. Santos, P. |
author_role |
author |
author2 |
Santos, P. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Tadeu, A. Santos, P. |
dc.subject.por.fl_str_mv |
Acoustic insulation Boundary elements method Acoustic barrier |
topic |
Acoustic insulation Boundary elements method Acoustic barrier |
description |
The boundary element method (BEM) has been used to compute the acoustic wave propagation through a single vertical panel, which separates two rooms, made of concrete, when one of the rooms is excited by a steady-state, spatially sinusoidal, harmonic line load pressure at low frequencies. This work focuses on how the connection of the panel to the ceiling affects the acoustic insulation provided by the wall. Perfect double-fixed partitions and acoustic barrier-type structures with differently-sized gaps between the ceiling and the barrier are studied. The BEM model is formulated in the frequency domain and takes the air-solid interaction fully into account. Insulation dips are localised in the frequency domain and identified with dips associated with both the wall's natural dynamic vibration modes and with those associated with the air in the rooms. The influence of the wall's thickness on acoustic insulation is also analysed. The computed results obtained with the acoustic barrier type structure are compared with those obtained by a rigid model. The importance of the rooms' surface conditions is assessed, modelling the rooms with cork. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003 |
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/10316/4005 http://hdl.handle.net/10316/4005 https://doi.org/10.1016/S0003-682X(02)00074-9 |
url |
http://hdl.handle.net/10316/4005 https://doi.org/10.1016/S0003-682X(02)00074-9 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Applied Acoustics. 64:3 (2003) 287-310 |
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) 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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1799133860123901952 |