Effect of compressive loads on plasticity induced crack closure

Detalhes bibliográficos
Autor(a) principal: Antunes, F.V.
Data de Publicação: 2015
Outros Autores: Correia, Luís M., Camas, D., Branco, R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Texto Completo: http://hdl.handle.net/10400.11/5521
Resumo: Compressive stresses play an important role on tension-compression fatigue which can be attributed to plasticity induced crack closure (PICC). The objective here is to study numerically the effect of compressive stresses on PICC and to discuss the applicability of PICC to explain the effect of negative stress ratios on fatigue crack growth rate. The compression produces reversed plastic deformation at the crack tip, reducing linearly the crack opening level. The incursion to negative stress ratios did not produce sudden changes in the behavior of PICC and no saturation with the decrease of minimum load was observed for δKeff. Crack closure was able to collapse da/dN-δK curves with negative stress ratios, indicating the applicability of the crack closure concept to explain the effect of negative R. The analysis of crack tip plastic strain range with and without contact of crack flanks confirmed the validity of crack closure concept.
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spelling Effect of compressive loads on plasticity induced crack closureFatigue crack growthPlasticity induced crack closureCompressive stressesNegative stress ratioCompressive stresses play an important role on tension-compression fatigue which can be attributed to plasticity induced crack closure (PICC). The objective here is to study numerically the effect of compressive stresses on PICC and to discuss the applicability of PICC to explain the effect of negative stress ratios on fatigue crack growth rate. The compression produces reversed plastic deformation at the crack tip, reducing linearly the crack opening level. The incursion to negative stress ratios did not produce sudden changes in the behavior of PICC and no saturation with the decrease of minimum load was observed for δKeff. Crack closure was able to collapse da/dN-δK curves with negative stress ratios, indicating the applicability of the crack closure concept to explain the effect of negative R. The analysis of crack tip plastic strain range with and without contact of crack flanks confirmed the validity of crack closure concept.ElsevierRepositório Científico do Instituto Politécnico de Castelo BrancoAntunes, F.V.Correia, Luís M.Camas, D.Branco, R.2017-04-11T16:12:55Z20152015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.11/5521eng0167-8442http://doi.org/10.1016/j.tafmec.2015.09.001info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-02-26T14:10:43Zoai:repositorio.ipcb.pt:10400.11/5521Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T21:26:03.140189Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Effect of compressive loads on plasticity induced crack closure
title Effect of compressive loads on plasticity induced crack closure
spellingShingle Effect of compressive loads on plasticity induced crack closure
Antunes, F.V.
Fatigue crack growth
Plasticity induced crack closure
Compressive stresses
Negative stress ratio
title_short Effect of compressive loads on plasticity induced crack closure
title_full Effect of compressive loads on plasticity induced crack closure
title_fullStr Effect of compressive loads on plasticity induced crack closure
title_full_unstemmed Effect of compressive loads on plasticity induced crack closure
title_sort Effect of compressive loads on plasticity induced crack closure
author Antunes, F.V.
author_facet Antunes, F.V.
Correia, Luís M.
Camas, D.
Branco, R.
author_role author
author2 Correia, Luís M.
Camas, D.
Branco, R.
author2_role author
author
author
dc.contributor.none.fl_str_mv Repositório Científico do Instituto Politécnico de Castelo Branco
dc.contributor.author.fl_str_mv Antunes, F.V.
Correia, Luís M.
Camas, D.
Branco, R.
dc.subject.por.fl_str_mv Fatigue crack growth
Plasticity induced crack closure
Compressive stresses
Negative stress ratio
topic Fatigue crack growth
Plasticity induced crack closure
Compressive stresses
Negative stress ratio
description Compressive stresses play an important role on tension-compression fatigue which can be attributed to plasticity induced crack closure (PICC). The objective here is to study numerically the effect of compressive stresses on PICC and to discuss the applicability of PICC to explain the effect of negative stress ratios on fatigue crack growth rate. The compression produces reversed plastic deformation at the crack tip, reducing linearly the crack opening level. The incursion to negative stress ratios did not produce sudden changes in the behavior of PICC and no saturation with the decrease of minimum load was observed for δKeff. Crack closure was able to collapse da/dN-δK curves with negative stress ratios, indicating the applicability of the crack closure concept to explain the effect of negative R. The analysis of crack tip plastic strain range with and without contact of crack flanks confirmed the validity of crack closure concept.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-01-01T00:00:00Z
2017-04-11T16:12:55Z
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/10400.11/5521
url http://hdl.handle.net/10400.11/5521
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0167-8442
http://doi.org/10.1016/j.tafmec.2015.09.001
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 Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
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instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
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reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
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