A one-dimensional least-square-consistent displacement-based meshless local Petrov-Galerkin method
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
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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Repositório Institucional da Universidade Federal do Ceará (UFC) |
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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 |
_version_ |
1813028977074241536 |