A study on the effect of carbon nanotubes’ distribution and agglomeration in the free vibration of nanocomposite plates
Autor(a) principal: | |
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Data de Publicação: | 2020 |
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/10400.21/12464 |
Resumo: | The present work aimed to characterize the free vibrations’ behaviour of nanocomposite plates obtained by incorporating graded distributions of carbon nanotubes (CNTs) in a polymeric matrix, considering the carbon nanotubes’ agglomeration effect. This effect is known to degrade material properties, therefore being important to predict the consequences it may bring to structures’ mechanical performance. To this purpose, the elastic properties’ estimation is performed according to the two-parameter agglomeration model based on the Eshelby–Mori–Tanaka approach for randomly dispersed nano-inclusions. This approach is implemented in association with the finite element method to determine the natural frequencies and corresponding mode shapes. Three main agglomeration cases were considered, namely, agglomeration absence, complete agglomeration, and partial agglomeration. The results show that the agglomeration effect has a negative impact on the natural frequencies of the plates, regardless the CNTs’ distribution considered. For the corresponding vibrations’ mode shapes, the agglomeration effect was shown in most cases not to have a significant impact, except for two of the cases studied: for a square plate and a rectangular plate with symmetrical and unsymmetrical CNTs’ distribution, respectively. Globally, the results confirm that not accounting for the nanotubes’ agglomeration effect may lead to less accurate elastic properties and less structures’ performance predictions. |
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A study on the effect of carbon nanotubes’ distribution and agglomeration in the free vibration of nanocomposite platesNanocompositesCNTs’ agglomerationFunctionally graded materialEshelby–Mori–Tanaka approachFree vibrations’ behaviourPlates’ natural frequenciesPlates’ vibration mode shapesThe present work aimed to characterize the free vibrations’ behaviour of nanocomposite plates obtained by incorporating graded distributions of carbon nanotubes (CNTs) in a polymeric matrix, considering the carbon nanotubes’ agglomeration effect. This effect is known to degrade material properties, therefore being important to predict the consequences it may bring to structures’ mechanical performance. To this purpose, the elastic properties’ estimation is performed according to the two-parameter agglomeration model based on the Eshelby–Mori–Tanaka approach for randomly dispersed nano-inclusions. This approach is implemented in association with the finite element method to determine the natural frequencies and corresponding mode shapes. Three main agglomeration cases were considered, namely, agglomeration absence, complete agglomeration, and partial agglomeration. The results show that the agglomeration effect has a negative impact on the natural frequencies of the plates, regardless the CNTs’ distribution considered. For the corresponding vibrations’ mode shapes, the agglomeration effect was shown in most cases not to have a significant impact, except for two of the cases studied: for a square plate and a rectangular plate with symmetrical and unsymmetrical CNTs’ distribution, respectively. Globally, the results confirm that not accounting for the nanotubes’ agglomeration effect may lead to less accurate elastic properties and less structures’ performance predictions.MDPIRCIPLCraveiro, D.S.Loja, M.A.R.2020-12-15T11:50:03Z2020-11-302020-11-30T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/12464engCRAVEIRO, D. S.; LOJA, M. A. R. – A study on the effect of carbon nanotubes’ distribution and agglomeration in the free vibration of nanocomposite plates. C — Journal of Carbon Research. ISSN 2311-5629. Vol. 6, N.º 4 (2020), pp. 1-322311-562910.3390/c6040079info: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:RCAAP2023-08-03T10:05:26Zoai:repositorio.ipl.pt:10400.21/12464Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:20:33.221371Repositório 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 study on the effect of carbon nanotubes’ distribution and agglomeration in the free vibration of nanocomposite plates |
title |
A study on the effect of carbon nanotubes’ distribution and agglomeration in the free vibration of nanocomposite plates |
spellingShingle |
A study on the effect of carbon nanotubes’ distribution and agglomeration in the free vibration of nanocomposite plates Craveiro, D.S. Nanocomposites CNTs’ agglomeration Functionally graded material Eshelby–Mori–Tanaka approach Free vibrations’ behaviour Plates’ natural frequencies Plates’ vibration mode shapes |
title_short |
A study on the effect of carbon nanotubes’ distribution and agglomeration in the free vibration of nanocomposite plates |
title_full |
A study on the effect of carbon nanotubes’ distribution and agglomeration in the free vibration of nanocomposite plates |
title_fullStr |
A study on the effect of carbon nanotubes’ distribution and agglomeration in the free vibration of nanocomposite plates |
title_full_unstemmed |
A study on the effect of carbon nanotubes’ distribution and agglomeration in the free vibration of nanocomposite plates |
title_sort |
A study on the effect of carbon nanotubes’ distribution and agglomeration in the free vibration of nanocomposite plates |
author |
Craveiro, D.S. |
author_facet |
Craveiro, D.S. Loja, M.A.R. |
author_role |
author |
author2 |
Loja, M.A.R. |
author2_role |
author |
dc.contributor.none.fl_str_mv |
RCIPL |
dc.contributor.author.fl_str_mv |
Craveiro, D.S. Loja, M.A.R. |
dc.subject.por.fl_str_mv |
Nanocomposites CNTs’ agglomeration Functionally graded material Eshelby–Mori–Tanaka approach Free vibrations’ behaviour Plates’ natural frequencies Plates’ vibration mode shapes |
topic |
Nanocomposites CNTs’ agglomeration Functionally graded material Eshelby–Mori–Tanaka approach Free vibrations’ behaviour Plates’ natural frequencies Plates’ vibration mode shapes |
description |
The present work aimed to characterize the free vibrations’ behaviour of nanocomposite plates obtained by incorporating graded distributions of carbon nanotubes (CNTs) in a polymeric matrix, considering the carbon nanotubes’ agglomeration effect. This effect is known to degrade material properties, therefore being important to predict the consequences it may bring to structures’ mechanical performance. To this purpose, the elastic properties’ estimation is performed according to the two-parameter agglomeration model based on the Eshelby–Mori–Tanaka approach for randomly dispersed nano-inclusions. This approach is implemented in association with the finite element method to determine the natural frequencies and corresponding mode shapes. Three main agglomeration cases were considered, namely, agglomeration absence, complete agglomeration, and partial agglomeration. The results show that the agglomeration effect has a negative impact on the natural frequencies of the plates, regardless the CNTs’ distribution considered. For the corresponding vibrations’ mode shapes, the agglomeration effect was shown in most cases not to have a significant impact, except for two of the cases studied: for a square plate and a rectangular plate with symmetrical and unsymmetrical CNTs’ distribution, respectively. Globally, the results confirm that not accounting for the nanotubes’ agglomeration effect may lead to less accurate elastic properties and less structures’ performance predictions. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-15T11:50:03Z 2020-11-30 2020-11-30T00:00:00Z |
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/10400.21/12464 |
url |
http://hdl.handle.net/10400.21/12464 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
CRAVEIRO, D. S.; LOJA, M. A. R. – A study on the effect of carbon nanotubes’ distribution and agglomeration in the free vibration of nanocomposite plates. C — Journal of Carbon Research. ISSN 2311-5629. Vol. 6, N.º 4 (2020), pp. 1-32 2311-5629 10.3390/c6040079 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
MDPI |
publisher.none.fl_str_mv |
MDPI |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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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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1799133474423046144 |