A 2.5D spectral approach to represent acoustic and elastic waveguides interaction on thin slab structures
Autor(a) principal: | |
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Data de Publicação: | 2017 |
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/10316/108329 https://doi.org/10.1016/j.proeng.2017.09.362 |
Resumo: | In this paper, we propose a spectral element method (SEM) to study guided waves in coupled problems involving thin-walled structures and fluid-acoustic cavities. The numerical method is based on the subdomain decomposition of the fluid-structure system. Two spectral elements are developed to represent the fluid and the structure. A plate element based on a mixed Reissner-Mindlin and Kirchhoff-Love formulation is proposed to represent the thin-walled structure. This element uses C0 approximation functions to overcome the difficulties to formulate elements with arbitrary order from C1 functions. The proposed element uses a substitute transverse shear strain field resulting free shear locking. The fluid element is derived from the Helmholtz equation. These elements use Lagrange polynomials as shape functions at the Legendre-Gauss-Lobatto (LGL) points. The analysis is carried out by a two-and-a-half dimension (2.5D) approach in the wavenumber-frequency domain. The guided wave in a fluid cavity with a flexible side is analysed. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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7160 |
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A 2.5D spectral approach to represent acoustic and elastic waveguides interaction on thin slab structuresFluid waveguidesolid waveguidetwo-and-a-half dimensionspectral element methodacousticshear lockingIn this paper, we propose a spectral element method (SEM) to study guided waves in coupled problems involving thin-walled structures and fluid-acoustic cavities. The numerical method is based on the subdomain decomposition of the fluid-structure system. Two spectral elements are developed to represent the fluid and the structure. A plate element based on a mixed Reissner-Mindlin and Kirchhoff-Love formulation is proposed to represent the thin-walled structure. This element uses C0 approximation functions to overcome the difficulties to formulate elements with arbitrary order from C1 functions. The proposed element uses a substitute transverse shear strain field resulting free shear locking. The fluid element is derived from the Helmholtz equation. These elements use Lagrange polynomials as shape functions at the Legendre-Gauss-Lobatto (LGL) points. The analysis is carried out by a two-and-a-half dimension (2.5D) approach in the wavenumber-frequency domain. The guided wave in a fluid cavity with a flexible side is analysed.Elsevier2017info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/108329http://hdl.handle.net/10316/108329https://doi.org/10.1016/j.proeng.2017.09.362eng18777058Cruz-Muñoz, F.J.Romero, A.Tadeu, A.Galvín, 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:RCAAP2023-08-24T10:24:59Zoai:estudogeral.uc.pt:10316/108329Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:24:37.875654Repositório 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 |
A 2.5D spectral approach to represent acoustic and elastic waveguides interaction on thin slab structures |
title |
A 2.5D spectral approach to represent acoustic and elastic waveguides interaction on thin slab structures |
spellingShingle |
A 2.5D spectral approach to represent acoustic and elastic waveguides interaction on thin slab structures Cruz-Muñoz, F.J. Fluid waveguide solid waveguide two-and-a-half dimension spectral element method acoustic shear locking |
title_short |
A 2.5D spectral approach to represent acoustic and elastic waveguides interaction on thin slab structures |
title_full |
A 2.5D spectral approach to represent acoustic and elastic waveguides interaction on thin slab structures |
title_fullStr |
A 2.5D spectral approach to represent acoustic and elastic waveguides interaction on thin slab structures |
title_full_unstemmed |
A 2.5D spectral approach to represent acoustic and elastic waveguides interaction on thin slab structures |
title_sort |
A 2.5D spectral approach to represent acoustic and elastic waveguides interaction on thin slab structures |
author |
Cruz-Muñoz, F.J. |
author_facet |
Cruz-Muñoz, F.J. Romero, A. Tadeu, A. Galvín, P. |
author_role |
author |
author2 |
Romero, A. Tadeu, A. Galvín, P. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Cruz-Muñoz, F.J. Romero, A. Tadeu, A. Galvín, P. |
dc.subject.por.fl_str_mv |
Fluid waveguide solid waveguide two-and-a-half dimension spectral element method acoustic shear locking |
topic |
Fluid waveguide solid waveguide two-and-a-half dimension spectral element method acoustic shear locking |
description |
In this paper, we propose a spectral element method (SEM) to study guided waves in coupled problems involving thin-walled structures and fluid-acoustic cavities. The numerical method is based on the subdomain decomposition of the fluid-structure system. Two spectral elements are developed to represent the fluid and the structure. A plate element based on a mixed Reissner-Mindlin and Kirchhoff-Love formulation is proposed to represent the thin-walled structure. This element uses C0 approximation functions to overcome the difficulties to formulate elements with arbitrary order from C1 functions. The proposed element uses a substitute transverse shear strain field resulting free shear locking. The fluid element is derived from the Helmholtz equation. These elements use Lagrange polynomials as shape functions at the Legendre-Gauss-Lobatto (LGL) points. The analysis is carried out by a two-and-a-half dimension (2.5D) approach in the wavenumber-frequency domain. The guided wave in a fluid cavity with a flexible side is analysed. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017 |
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/10316/108329 http://hdl.handle.net/10316/108329 https://doi.org/10.1016/j.proeng.2017.09.362 |
url |
http://hdl.handle.net/10316/108329 https://doi.org/10.1016/j.proeng.2017.09.362 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
18777058 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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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1799134130530680832 |