Effect of compressive loads on plasticity induced crack closure

Detalhes bibliográficos
Autor(a) principal: Antunes, F. V.
Data de Publicação: 2015
Outros Autores: Correia, L., Camas, D., Branco, R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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, L.Camas, D.Branco, R.2017-04-11T16:12:55Z2015-122015-12-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.11/5521engANTUNES, F. V. [et al.] (2015) - Effect of compressive loads on plasticity induced crack closure. Theoretical and Applied Fracture Mechanics. ISSN 0167-8442. Vol. 80, p. 193-204 Doi: 10.1016/j.tafmec.2015.09.0010167-8442http://doi.org/10.1016/j.tafmec.2015.09.001info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-01-16T11:44:45Zoai:repositorio.ipcb.pt:10400.11/5521Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:36:15.989904Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
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, L.
Camas, D.
Branco, R.
author_role author
author2 Correia, L.
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, L.
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 2015-12
2015-12-01T00:00:00Z
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 ANTUNES, F. V. [et al.] (2015) - Effect of compressive loads on plasticity induced crack closure. Theoretical and Applied Fracture Mechanics. ISSN 0167-8442. Vol. 80, p. 193-204 Doi: 10.1016/j.tafmec.2015.09.001
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:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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