A parameter for quantitative analysis of plasticity induced crack closure

Antunes, F.V.; Correia, Luís M.; Ramalho, Armando

Publication

A parameter for quantitative analysis of plasticity induced crack closure

2015Journal article

dc.contributor.author	Antunes, F.V.
dc.contributor.author	Correia, Luís M.
dc.contributor.author	Ramalho, Armando
dc.date.accessioned	2017-04-11T15:04:11Z
dc.date.available	2017-04-11T15:04:11Z
dc.date.issued	2015
dc.description.abstract	Numerical models have been successfully developed to predict plasticity induced crack closure (PICC). However, despite the large research effort a full understanding of the links between physical parameters, residual plastic wake and PICC has not been achieved yet. The plastic extension of material behind crack tip, Dyp, obtained by the integration of vertical plastic deformation perpendicularly to crack flank, is proposed here to quantify the residual plastic field. The values of Dyp and PICC were obtained numerically in a M(T) specimen using the finite element method. An excellent correlation was found between PICC and Dyp which indicates that this parameter controls the phenomenon, and can be used to quantify the effect of physical parameters. An empirical model was developed to predict PICC assuming that the residual plastic field is a set of vertical plastic wedges, that the linear superposition principle applies and that the influence of a particular wedge exponentially decreases with distance to crack tip. The model was applied successfully to predict PICC for different residual plastic fields which provided an additional validation of Dyp as the parameter controlling PICC.	pt_PT
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.citation	ANTUNES, F. V.; CORREIA, L.; RAMALHO, A. L. (2015) - A parameter for quantitative analysis of plasticity induced crack closure. International Journal of Fatigue. ISSN 0142-1123. Vol. 71, p. 87-97	pt_PT
dc.identifier.doi	http://dx.doi.org/10.1016/j.ijfatigue.2013.08.026	pt_PT
dc.identifier.issn	0142-1123
dc.identifier.uri	http://hdl.handle.net/10400.11/5519
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.publisher	Elsevier	pt_PT
dc.relation	Numerical modelling of fatigue crack propagation
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	pt_PT
dc.subject	Plasticity induced crack closure (PICC)	pt_PT
dc.subject	Finite element method	pt_PT
dc.subject	Plastic wedges	pt_PT
dc.subject	Residual plastic field	pt_PT
dc.title	A parameter for quantitative analysis of plasticity induced crack closure	pt_PT
dc.type	journal article
dspace.entity.type	Publication
oaire.awardTitle	Numerical modelling of fatigue crack propagation
oaire.awardURI	info:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FEME-PME%2F114892%2F2009/PT
oaire.awardURI	info:eu-repo/grantAgreement/FCT/COMPETE/PEst-C%2FEME%2FUI0285%2F2013/PT
oaire.citation.endPage	97	pt_PT
oaire.citation.startPage	87	pt_PT
oaire.citation.title	International Journal of Fatigue	pt_PT
oaire.citation.volume	71	pt_PT
oaire.fundingStream	5876-PPCDTI
oaire.fundingStream	COMPETE
person.familyName	Ramalho
person.givenName	Armando
person.identifier.orcid	0000-0003-0500-0459
project.funder.identifier	http://doi.org/10.13039/501100001871
project.funder.identifier	http://doi.org/10.13039/501100001871
project.funder.name	Fundação para a Ciência e a Tecnologia
project.funder.name	Fundação para a Ciência e a Tecnologia
rcaap.rights	openAccess	pt_PT
rcaap.type	article	pt_PT
relation.isAuthorOfPublication	6b97c564-668a-46d8-a91b-ecfae68912c2
relation.isAuthorOfPublication.latestForDiscovery	6b97c564-668a-46d8-a91b-ecfae68912c2
relation.isProjectOfPublication	2b90b0cc-120d-49bd-bacd-b15522f57e85
relation.isProjectOfPublication	a5bee73c-f286-4cae-9cf1-b0cebff5d9c0
relation.isProjectOfPublication.latestForDiscovery	2b90b0cc-120d-49bd-bacd-b15522f57e85