Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/108201
DC Field | Value | Language |
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dc.contributor.author | Antunes, F. V. | - |
dc.contributor.author | Simões, R. | - |
dc.contributor.author | Branco, R. | - |
dc.contributor.author | Prates, Pedro | - |
dc.date.accessioned | 2023-08-16T11:09:12Z | - |
dc.date.available | 2023-08-16T11:09:12Z | - |
dc.date.issued | 2017 | - |
dc.identifier.issn | 19718993 | pt |
dc.identifier.uri | https://hdl.handle.net/10316/108201 | - |
dc.description.abstract | Fatigue crack growth (FCG) is associated with irreversible and non-linear processes happening at the crack tip. This explains different problems observed in the use of da/dN-K curves, namely the inability to explain stress ratio and load history effects. The replacement of K by nonlinear crack tip parameters, namely the crack tip opening displacement (CTOD) is an interesting alternative. However, the determination of CTOD, using the finite element method, depends on different numerical parameters, not sufficiently studied so far. The objective here is to study the effect of these parameters on plastic CTOD, and therefore on da/dN-CTODp curves. A transient behaviour was found at the beginning of numerical crack propagation which is linked to the formation of residual plastic wake. Therefore, a minimum number of crack increments is required to obtain stabilized values. On the other hand, the predicted CTODp decreases with the distance to crack tip. Close to the crack tip, sensitivity to the measured values is much higher, but it also exists at remote positions. In addition, the mesh has a relatively low influence on CTODp. Finally, the effect of the number of load cycles between crack increments greatly depends on material properties. | pt |
dc.language.iso | eng | pt |
dc.publisher | Gruppo Italiano Frattura | pt |
dc.relation | PTDC/EMS-PRO/1356/2014 | pt |
dc.relation | FEDER funds through the program COMPETE (under project T449508144- 00019113) | pt |
dc.relation | FCT - SFRH/BPD/101465/2014 | pt |
dc.rights | openAccess | pt |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt |
dc.subject | Crack tip opening displacement (CTOD) | pt |
dc.subject | Plastic CTOD | pt |
dc.subject | Finite element method | pt |
dc.subject | Numerical parameters | pt |
dc.title | Effect of numerical parameters on plastic CTOD | pt |
dc.type | article | - |
degois.publication.firstPage | 149 | pt |
degois.publication.lastPage | 156 | pt |
degois.publication.issue | 41 | pt |
degois.publication.title | Frattura ed Integrita Strutturale | pt |
dc.peerreviewed | yes | pt |
dc.identifier.doi | 10.3221/IGF-ESIS.41.21 | pt |
degois.publication.volume | 11 | pt |
dc.date.embargo | 2017-01-01 | * |
uc.date.periodoEmbargo | 0 | pt |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.openairetype | article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | Com Texto completo | - |
crisitem.author.researchunit | CEMMPRE - Centre for Mechanical Engineering, Materials and Processes | - |
crisitem.author.researchunit | ISISE - Institute for Sustainability and Innovation in Structural Engineering | - |
crisitem.author.researchunit | CEMMPRE - Centre for Mechanical Engineering, Materials and Processes | - |
crisitem.author.researchunit | CEMMPRE - Centre for Mechanical Engineering, Materials and Processes | - |
crisitem.author.orcid | 0000-0002-0336-4729 | - |
crisitem.author.orcid | 0000-0002-1793-3291 | - |
crisitem.author.orcid | 0000-0003-2471-1125 | - |
crisitem.author.orcid | 0000-0001-7650-9362 | - |
Appears in Collections: | FCTUC Eng.Civil - Artigos em Revistas Internacionais I&D CEMMPRE - Artigos em Revistas Internacionais |
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File | Description | Size | Format | |
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Effect of numerical parameters on plastic CTOD.pdf | 449.81 kB | Adobe PDF | View/Open |
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This item is licensed under a Creative Commons License