Acoustic displacement triangle based on the individual element test

Detalhes bibliográficos
Autor(a) principal: Correa,S.
Data de Publicação: 2012
Outros Autores: Militello,C., Recuero,M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Latin American journal of solids and structures (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252012000200002
Resumo: A three node -displacement based- acoustic element is developed. In order to avoid spurious rotational modes, a higher order stiffness is introduced. This higher order stiffness is developed from an incompatible strain field which computes element volume changes under nodal rotational displacements fields. The higher order strain resulting from the incompatible strain field satisfies the Individual Element Test (IET) requirements without affecting convergence. The higher order stiffness is modulated, element by element, with a factor. As a result, the displacement based formulation presented on this paper is capable of placing the spurious rotational modes above the range of the physical compressional modes that can be accurately calculated by the mesh.
id ABCM-1_0dcc3d2a4658454e294d0c3189ae1b71
oai_identifier_str oai:scielo:S1679-78252012000200002
network_acronym_str ABCM-1
network_name_str Latin American journal of solids and structures (Online)
repository_id_str
spelling Acoustic displacement triangle based on the individual element testFluid-structure interactionDisplacement-based formulationSpurious modesIndividual Element TestParameterized Variational PrincipleA three node -displacement based- acoustic element is developed. In order to avoid spurious rotational modes, a higher order stiffness is introduced. This higher order stiffness is developed from an incompatible strain field which computes element volume changes under nodal rotational displacements fields. The higher order strain resulting from the incompatible strain field satisfies the Individual Element Test (IET) requirements without affecting convergence. The higher order stiffness is modulated, element by element, with a factor. As a result, the displacement based formulation presented on this paper is capable of placing the spurious rotational modes above the range of the physical compressional modes that can be accurately calculated by the mesh.Associação Brasileira de Ciências Mecânicas2012-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252012000200002Latin American Journal of Solids and Structures v.9 n.2 2012reponame:Latin American journal of solids and structures (Online)instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)instacron:ABCM10.1590/S1679-78252012000200002info:eu-repo/semantics/openAccessCorrea,S.Militello,C.Recuero,M.eng2013-01-17T00:00:00Zoai:scielo:S1679-78252012000200002Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=1679-7825&lng=pt&nrm=isohttps://old.scielo.br/oai/scielo-oai.phpabcm@abcm.org.br||maralves@usp.br1679-78251679-7817opendoar:2013-01-17T00:00Latin American journal of solids and structures (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)false
dc.title.none.fl_str_mv Acoustic displacement triangle based on the individual element test
title Acoustic displacement triangle based on the individual element test
spellingShingle Acoustic displacement triangle based on the individual element test
Correa,S.
Fluid-structure interaction
Displacement-based formulation
Spurious modes
Individual Element Test
Parameterized Variational Principle
title_short Acoustic displacement triangle based on the individual element test
title_full Acoustic displacement triangle based on the individual element test
title_fullStr Acoustic displacement triangle based on the individual element test
title_full_unstemmed Acoustic displacement triangle based on the individual element test
title_sort Acoustic displacement triangle based on the individual element test
author Correa,S.
author_facet Correa,S.
Militello,C.
Recuero,M.
author_role author
author2 Militello,C.
Recuero,M.
author2_role author
author
dc.contributor.author.fl_str_mv Correa,S.
Militello,C.
Recuero,M.
dc.subject.por.fl_str_mv Fluid-structure interaction
Displacement-based formulation
Spurious modes
Individual Element Test
Parameterized Variational Principle
topic Fluid-structure interaction
Displacement-based formulation
Spurious modes
Individual Element Test
Parameterized Variational Principle
description A three node -displacement based- acoustic element is developed. In order to avoid spurious rotational modes, a higher order stiffness is introduced. This higher order stiffness is developed from an incompatible strain field which computes element volume changes under nodal rotational displacements fields. The higher order strain resulting from the incompatible strain field satisfies the Individual Element Test (IET) requirements without affecting convergence. The higher order stiffness is modulated, element by element, with a factor. As a result, the displacement based formulation presented on this paper is capable of placing the spurious rotational modes above the range of the physical compressional modes that can be accurately calculated by the mesh.
publishDate 2012
dc.date.none.fl_str_mv 2012-04-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252012000200002
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252012000200002
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1679-78252012000200002
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Ciências Mecânicas
publisher.none.fl_str_mv Associação Brasileira de Ciências Mecânicas
dc.source.none.fl_str_mv Latin American Journal of Solids and Structures v.9 n.2 2012
reponame:Latin American journal of solids and structures (Online)
instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)
instacron:ABCM
instname_str Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)
instacron_str ABCM
institution ABCM
reponame_str Latin American journal of solids and structures (Online)
collection Latin American journal of solids and structures (Online)
repository.name.fl_str_mv Latin American journal of solids and structures (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)
repository.mail.fl_str_mv abcm@abcm.org.br||maralves@usp.br
_version_ 1754302886886506496

Registros relacionados