The effect of plasticity theory on predicted residual stress fields in numerical weld analyses

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dc.contributor.authorMuránsky, Oen_AU
dc.contributor.authorHamelin, CJen_AU
dc.contributor.authorSmith, MCen_AU
dc.contributor.authorBendeich, PJen_AU
dc.contributor.authorEdwards, Len_AU
dc.date.accessioned2025-03-06T04:08:58Zen_AU
dc.date.available2025-03-06T04:08:58Zen_AU
dc.date.issued2012-03en_AU
dc.date.statistics2025-02-26en_AU
dc.description.abstractConstitutive plasticity theory is commonly applied to the numerical analysis of welds in one of three ways: using an isotropic hardening model, a kinematic hardening model, or a mixed isotropic-kinematic hardening model. The choice of model is not entirely dependent on its numerical accuracy, however, as a lack of empirical data will often necessitate the use of a specific approach. The present paper seeks to identify the accuracy of each formalism through direct comparison of the predicted and actual post-weld residual stress field developed in a three-pass 316LN stainless steel slot weldment. From these comparisons, it is clear that while the isotropic hardening model tends to noticeably over-predict and the kinematic hardening model slightly under-predict the residual stress field, the results using a mixed hardening model are quantitatively accurate. The level of inaccuracy in isotropic models is shown to be largely dependent on the extent of thermal cycling experienced by the material. Even though the kinematic hardening model generally provides more accurate results when compared to an isotropic hardening formalism, the latter might be a more appealing choice to engineers requiring a conservative design regarding weld residual stress. © 2011 Elsevier B.V.en_AU
dc.identifier.citationMuránsky, O., Hamelin, C. J., Smith, M. C., Bendeich, P. J., & Edwards, L. (2012). The effect of plasticity theory on predicted residual stress fields in numerical weld analyses. Computational Materials Science, 54, 125-134. doi:10.1016/j.commatsci.2011.10.026en_AU
dc.identifier.issn0927-0256en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleComputational Materials Scienceen_AU
dc.identifier.pagination125-134en_AU
dc.identifier.urihttps://doi.org/10.1016/j.commatsci.2011.10.026en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/16021en_AU
dc.identifier.volume54en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectPlasticityen_AU
dc.subjectWeldingen_AU
dc.subjectIsotropyen_AU
dc.subjectResidual stressesen_AU
dc.subjectNumerical analysisen_AU
dc.subjectHardeningen_AU
dc.subjectFinite element methoden_AU
dc.subjectANSTOen_AU
dc.subjectAustralian organizationsen_AU
dc.subjectAustenitic steelsen_AU
dc.titleThe effect of plasticity theory on predicted residual stress fields in numerical weld analysesen_AU
dc.typeJournal Articleen_AU
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