A one-dimensional least-square-consistent displacement-based meshless local Petrov-Galerkin method

Detalhes bibliográficos
Autor(a) principal: Sousa, Laise Lima de Carvalho
Data de Publicação: 2019
Outros Autores: Oliveira, Suzana Matos França de, Vidal, Creto Augusto, Cavalcante Neto, Joaquim Bento
Tipo de documento: Relatório
Idioma: eng
Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
Texto Completo: http://www.repositorio.ufc.br/handle/riufc/48390
Resumo: In recent years, the Meshless Local Petrov-Galerkin (MLPG) Method has attracted the attention of many researchers in solving several types of boundary value problems. This method is based on a local weak form, evaluated in local subdomains and does not require any mesh, either in the construction of the test and shape functions or in the integration process. However, the shape functions used in MLPG have complicated forms, which makes their computation and their derivative’s computation costly. In this work, using the Moving Least Square (MLS) Method, we dissociate the point where the approximating polynomial’s coefficients are optimized, from the points where its derivatives are computed. We argue that this approach not only is consistent with the underlying approximation hypothesis, but also makes computation of derivatives simpler. We apply our approach to a two-point boundary value problem, and perform several tests to support our claim. The results show that the proposed model is efficient, achieves good precision, and is attractive to be applied to other higher-dimension problems.
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spelling A one-dimensional least-square-consistent displacement-based meshless local Petrov-Galerkin methodRelatório Técnico do Departamento de Computação da Universidade Federal do CearáA one-dimensional least-square-consistent displacement-based meshless local Petrov-Galerkin methodMeshless methodMeshless local Petrov-Galerkin (MLPG) methodBoundary value problemIn recent years, the Meshless Local Petrov-Galerkin (MLPG) Method has attracted the attention of many researchers in solving several types of boundary value problems. This method is based on a local weak form, evaluated in local subdomains and does not require any mesh, either in the construction of the test and shape functions or in the integration process. However, the shape functions used in MLPG have complicated forms, which makes their computation and their derivative’s computation costly. In this work, using the Moving Least Square (MLS) Method, we dissociate the point where the approximating polynomial’s coefficients are optimized, from the points where its derivatives are computed. We argue that this approach not only is consistent with the underlying approximation hypothesis, but also makes computation of derivatives simpler. We apply our approach to a two-point boundary value problem, and perform several tests to support our claim. The results show that the proposed model is efficient, achieves good precision, and is attractive to be applied to other higher-dimension problems.2019-12-11T19:33:58Z2019-12-11T19:33:58Z2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/reportapplication/pdfSOUSA, Laise Lima de Carvalho; OLIVEIRA, Suzana Matos França de; VIDAL, Creto Augusto; CAVALCANTE NETO, Joaquim Bento. A one-dimensional least-square-consistent displacement-based meshless local petrov-galerkin method. Fortaleza: Departamento de Computação da Universidade Federal do Ceará, 2019. 30 p.http://www.repositorio.ufc.br/handle/riufc/48390Sousa, Laise Lima de CarvalhoOliveira, Suzana Matos França deVidal, Creto AugustoCavalcante Neto, Joaquim Bentoengreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFCinfo:eu-repo/semantics/openAccess2019-12-11T19:33:58Zoai:repositorio.ufc.br:riufc/48390Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2024-09-11T18:52:06.359197Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false
dc.title.none.fl_str_mv A one-dimensional least-square-consistent displacement-based meshless local Petrov-Galerkin method
Relatório Técnico do Departamento de Computação da Universidade Federal do Ceará
A one-dimensional least-square-consistent displacement-based meshless local Petrov-Galerkin method
title A one-dimensional least-square-consistent displacement-based meshless local Petrov-Galerkin method
spellingShingle A one-dimensional least-square-consistent displacement-based meshless local Petrov-Galerkin method
Sousa, Laise Lima de Carvalho
Meshless method
Meshless local Petrov-Galerkin (MLPG) method
Boundary value problem
title_short A one-dimensional least-square-consistent displacement-based meshless local Petrov-Galerkin method
title_full A one-dimensional least-square-consistent displacement-based meshless local Petrov-Galerkin method
title_fullStr A one-dimensional least-square-consistent displacement-based meshless local Petrov-Galerkin method
title_full_unstemmed A one-dimensional least-square-consistent displacement-based meshless local Petrov-Galerkin method
title_sort A one-dimensional least-square-consistent displacement-based meshless local Petrov-Galerkin method
author Sousa, Laise Lima de Carvalho
author_facet Sousa, Laise Lima de Carvalho
Oliveira, Suzana Matos França de
Vidal, Creto Augusto
Cavalcante Neto, Joaquim Bento
author_role author
author2 Oliveira, Suzana Matos França de
Vidal, Creto Augusto
Cavalcante Neto, Joaquim Bento
author2_role author
author
author
dc.contributor.author.fl_str_mv Sousa, Laise Lima de Carvalho
Oliveira, Suzana Matos França de
Vidal, Creto Augusto
Cavalcante Neto, Joaquim Bento
dc.subject.por.fl_str_mv Meshless method
Meshless local Petrov-Galerkin (MLPG) method
Boundary value problem
topic Meshless method
Meshless local Petrov-Galerkin (MLPG) method
Boundary value problem
description In recent years, the Meshless Local Petrov-Galerkin (MLPG) Method has attracted the attention of many researchers in solving several types of boundary value problems. This method is based on a local weak form, evaluated in local subdomains and does not require any mesh, either in the construction of the test and shape functions or in the integration process. However, the shape functions used in MLPG have complicated forms, which makes their computation and their derivative’s computation costly. In this work, using the Moving Least Square (MLS) Method, we dissociate the point where the approximating polynomial’s coefficients are optimized, from the points where its derivatives are computed. We argue that this approach not only is consistent with the underlying approximation hypothesis, but also makes computation of derivatives simpler. We apply our approach to a two-point boundary value problem, and perform several tests to support our claim. The results show that the proposed model is efficient, achieves good precision, and is attractive to be applied to other higher-dimension problems.
publishDate 2019
dc.date.none.fl_str_mv 2019-12-11T19:33:58Z
2019-12-11T19:33:58Z
2019
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/report
format report
status_str publishedVersion
dc.identifier.uri.fl_str_mv SOUSA, Laise Lima de Carvalho; OLIVEIRA, Suzana Matos França de; VIDAL, Creto Augusto; CAVALCANTE NETO, Joaquim Bento. A one-dimensional least-square-consistent displacement-based meshless local petrov-galerkin method. Fortaleza: Departamento de Computação da Universidade Federal do Ceará, 2019. 30 p.
http://www.repositorio.ufc.br/handle/riufc/48390
identifier_str_mv SOUSA, Laise Lima de Carvalho; OLIVEIRA, Suzana Matos França de; VIDAL, Creto Augusto; CAVALCANTE NETO, Joaquim Bento. A one-dimensional least-square-consistent displacement-based meshless local petrov-galerkin method. Fortaleza: Departamento de Computação da Universidade Federal do Ceará, 2019. 30 p.
url http://www.repositorio.ufc.br/handle/riufc/48390
dc.language.iso.fl_str_mv eng
language eng
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.source.none.fl_str_mv reponame:Repositório Institucional da Universidade Federal do Ceará (UFC)
instname:Universidade Federal do Ceará (UFC)
instacron:UFC
instname_str Universidade Federal do Ceará (UFC)
instacron_str UFC
institution UFC
reponame_str Repositório Institucional da Universidade Federal do Ceará (UFC)
collection Repositório Institucional da Universidade Federal do Ceará (UFC)
repository.name.fl_str_mv Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)
repository.mail.fl_str_mv bu@ufc.br || repositorio@ufc.br
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