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Article: Discrete dislocation simulations of the development of a continuum plastic zone ahead of a stationary Mode III crack

TitleDiscrete dislocation simulations of the development of a continuum plastic zone ahead of a stationary Mode III crack
Authors
KeywordsFracture and fracture toughness
Mechanical properties
Dislocations
Dynamic phenomena
Computer simulation
Issue Date2003
Citation
Journal of the Mechanics and Physics of Solids, 2003, v. 51, n. 4, p. 695-713 How to Cite?
AbstractWe present results from discrete dislocation simulations showing the development of the plastic zone in front of a Mode III crack under constant load. We find that the equilibrated zone is circular, in agreement with continuum mechanics predictions of the elastic-perfectly plastic Mode III crack. The size of the equilibrated zone scales as the square of the applied load (KIII), also in agreement with the continuum results. The zone approaches saturation exponentially, with a time that scales as KIII2/σp3, where σp is the Peierls stress. These results delineate conditions under which the classical, continuum predictions of elastic-plastic fracture mechanics are applicable. © 2003 Published by Elsevier Science Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/303206
ISSN
2023 Impact Factor: 5.0
2023 SCImago Journal Rankings: 1.632
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZacharopoulos, N.-
dc.contributor.authorSrolovitz, D. J.-
dc.contributor.authorLeSar, R.-
dc.date.accessioned2021-09-15T08:24:50Z-
dc.date.available2021-09-15T08:24:50Z-
dc.date.issued2003-
dc.identifier.citationJournal of the Mechanics and Physics of Solids, 2003, v. 51, n. 4, p. 695-713-
dc.identifier.issn0022-5096-
dc.identifier.urihttp://hdl.handle.net/10722/303206-
dc.description.abstractWe present results from discrete dislocation simulations showing the development of the plastic zone in front of a Mode III crack under constant load. We find that the equilibrated zone is circular, in agreement with continuum mechanics predictions of the elastic-perfectly plastic Mode III crack. The size of the equilibrated zone scales as the square of the applied load (KIII), also in agreement with the continuum results. The zone approaches saturation exponentially, with a time that scales as KIII2/σp3, where σp is the Peierls stress. These results delineate conditions under which the classical, continuum predictions of elastic-plastic fracture mechanics are applicable. © 2003 Published by Elsevier Science Ltd.-
dc.languageeng-
dc.relation.ispartofJournal of the Mechanics and Physics of Solids-
dc.subjectFracture and fracture toughness-
dc.subjectMechanical properties-
dc.subjectDislocations-
dc.subjectDynamic phenomena-
dc.subjectComputer simulation-
dc.titleDiscrete dislocation simulations of the development of a continuum plastic zone ahead of a stationary Mode III crack-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0022-5096(02)00099-6-
dc.identifier.scopuseid_2-s2.0-0037386748-
dc.identifier.volume51-
dc.identifier.issue4-
dc.identifier.spage695-
dc.identifier.epage713-
dc.identifier.isiWOS:000181092500005-

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