Diverter damper force analysis and stress intensity factors for its double fillet welds by boundary element method
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s40430-021-02812-0 http://hdl.handle.net/11449/208382 |
Resumo: | Mechanisms usually transmit power by welded links into a shaft. Should this weld be partial, like fillet welds, there will be an area of stress concentration that could behave like a crack due to sharp corners. These can lead to structural failures due to fatigue. Consequently, to properly design, inspect and maintain these mechanisms it is necessary to use fracture mechanics stress intensity factors. The crack mesh simplicity required by the boundary element method allows easy modeling even for complex geometry. This technique will be used to obtain such parameters for a double fillet weld found in a diverter damper mechanism responsible for controlling hot gas flow to heat recovery steam generator in power plants. But the solutions presented can be used for similar geometrical configurations, specially to shaft link mechanisms. Empirical equations were also obtained to further ease fracture mechanics and fatigue analysis for this kind of geometry. |
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Diverter damper force analysis and stress intensity factors for its double fillet welds by boundary element methodBoundary element methodCrackDiverter damperFillet weldFracture mechanicsStress intensity factorMechanisms usually transmit power by welded links into a shaft. Should this weld be partial, like fillet welds, there will be an area of stress concentration that could behave like a crack due to sharp corners. These can lead to structural failures due to fatigue. Consequently, to properly design, inspect and maintain these mechanisms it is necessary to use fracture mechanics stress intensity factors. The crack mesh simplicity required by the boundary element method allows easy modeling even for complex geometry. This technique will be used to obtain such parameters for a double fillet weld found in a diverter damper mechanism responsible for controlling hot gas flow to heat recovery steam generator in power plants. But the solutions presented can be used for similar geometrical configurations, specially to shaft link mechanisms. Empirical equations were also obtained to further ease fracture mechanics and fatigue analysis for this kind of geometry.Department of Maintenance Petrobras S.ADepartment of Mechanical Engineering Universidade Estadual Paulista (UNESP), Brasil Avenue, 56Department of Mechanical Engineering Universidade Estadual Paulista (UNESP), Brasil Avenue, 56Petrobras S.AUniversidade Estadual Paulista (Unesp)de Souza Schiara, LeandroPaschoalini, Amarildo Tabone [UNESP]2021-06-25T11:11:14Z2021-06-25T11:11:14Z2021-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1007/s40430-021-02812-0Journal of the Brazilian Society of Mechanical Sciences and Engineering, v. 43, n. 3, 2021.1806-36911678-5878http://hdl.handle.net/11449/20838210.1007/s40430-021-02812-02-s2.0-85100494381Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of the Brazilian Society of Mechanical Sciences and Engineeringinfo:eu-repo/semantics/openAccess2021-10-23T19:02:07Zoai:repositorio.unesp.br:11449/208382Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T19:02:07Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Diverter damper force analysis and stress intensity factors for its double fillet welds by boundary element method |
title |
Diverter damper force analysis and stress intensity factors for its double fillet welds by boundary element method |
spellingShingle |
Diverter damper force analysis and stress intensity factors for its double fillet welds by boundary element method de Souza Schiara, Leandro Boundary element method Crack Diverter damper Fillet weld Fracture mechanics Stress intensity factor |
title_short |
Diverter damper force analysis and stress intensity factors for its double fillet welds by boundary element method |
title_full |
Diverter damper force analysis and stress intensity factors for its double fillet welds by boundary element method |
title_fullStr |
Diverter damper force analysis and stress intensity factors for its double fillet welds by boundary element method |
title_full_unstemmed |
Diverter damper force analysis and stress intensity factors for its double fillet welds by boundary element method |
title_sort |
Diverter damper force analysis and stress intensity factors for its double fillet welds by boundary element method |
author |
de Souza Schiara, Leandro |
author_facet |
de Souza Schiara, Leandro Paschoalini, Amarildo Tabone [UNESP] |
author_role |
author |
author2 |
Paschoalini, Amarildo Tabone [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Petrobras S.A Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
de Souza Schiara, Leandro Paschoalini, Amarildo Tabone [UNESP] |
dc.subject.por.fl_str_mv |
Boundary element method Crack Diverter damper Fillet weld Fracture mechanics Stress intensity factor |
topic |
Boundary element method Crack Diverter damper Fillet weld Fracture mechanics Stress intensity factor |
description |
Mechanisms usually transmit power by welded links into a shaft. Should this weld be partial, like fillet welds, there will be an area of stress concentration that could behave like a crack due to sharp corners. These can lead to structural failures due to fatigue. Consequently, to properly design, inspect and maintain these mechanisms it is necessary to use fracture mechanics stress intensity factors. The crack mesh simplicity required by the boundary element method allows easy modeling even for complex geometry. This technique will be used to obtain such parameters for a double fillet weld found in a diverter damper mechanism responsible for controlling hot gas flow to heat recovery steam generator in power plants. But the solutions presented can be used for similar geometrical configurations, specially to shaft link mechanisms. Empirical equations were also obtained to further ease fracture mechanics and fatigue analysis for this kind of geometry. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T11:11:14Z 2021-06-25T11:11:14Z 2021-03-01 |
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://dx.doi.org/10.1007/s40430-021-02812-0 Journal of the Brazilian Society of Mechanical Sciences and Engineering, v. 43, n. 3, 2021. 1806-3691 1678-5878 http://hdl.handle.net/11449/208382 10.1007/s40430-021-02812-0 2-s2.0-85100494381 |
url |
http://dx.doi.org/10.1007/s40430-021-02812-0 http://hdl.handle.net/11449/208382 |
identifier_str_mv |
Journal of the Brazilian Society of Mechanical Sciences and Engineering, v. 43, n. 3, 2021. 1806-3691 1678-5878 10.1007/s40430-021-02812-0 2-s2.0-85100494381 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of the Brazilian Society of Mechanical Sciences and Engineering |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803649994974035968 |