Analysis of crack closure and wake of plasticity with the distributed dislocation technique

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dc.contributor.authorVidler, J.
dc.contributor.authorKotousov, A.
dc.contributor.authorNg, C.T.
dc.date.issued2023
dc.descriptionAvailable online 9 August 2023
dc.description.abstractA new method for the analysis of plasticity-induced closure of finite cracks is developed based on the distributed dislocation technique. The method is applied to analyse closure and opening processes for an embedded fatigue crack propagating under constant amplitude cyclic loading. The obtained solution and presented results can serve as a benchmark for numerical procedures utilising the same yield-strip methodology. Comparison with past numerical studies reveals similar trends, though there are some differences in the crack tip opening values, particularly for low and negative R-ratios. The latter may indicate the need for a better approach to the discretisation of the contact, direct and reverse plasticity zones in the numerical procedures which utilise the same methodology. The developed method is general, and it can be adapted to evaluate the crack tip opening stress for other crack geometries and loading conditions.
dc.description.statementofresponsibilityJames Vidler, Andrei Kotousov, Ching-Tai Ng
dc.identifier.citationTheoretical and Applied Fracture Mechanics, 2023; 127:104034-1-104034-10
dc.identifier.doi10.1016/j.tafmec.2023.104034
dc.identifier.issn0167-8442
dc.identifier.issn1872-7638
dc.identifier.orcidVidler, J. [0000-0002-6564-0813]
dc.identifier.orcidKotousov, A. [0000-0001-9337-5095]
dc.identifier.urihttps://hdl.handle.net/2440/139491
dc.language.isoen
dc.publisherElsevier
dc.rights© 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
dc.source.urihttps://doi.org/10.1016/j.tafmec.2023.104034
dc.subjectCrack closure; Strip-yield model; Crack tip plasticity; Fatigue crack growth; Distributed dislocation technique; Chebyshev–Gauss quadrature
dc.titleAnalysis of crack closure and wake of plasticity with the distributed dislocation technique
dc.typeJournal article
pubs.publication-statusPublished

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