Accurate prediction of residual stress in stainless steel welds

M C Smith, P J Bouchard, Mark Turski, Lyndon Edwards, R J Dennis

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Measurements of stress-strain properties and residual stress in purpose-designed one and three-pass groove-weld specimens are used to optimise a mixed hardening constitutive model for simulating residual stresses in austenitic Type 316 stainless steel weldments. It is demonstrated that isotropic hardening over-predicts the tensile magnitude of welding residual stress in the benchmark specimens, while pure kinematic hardening gives an under-prediction of longitudinal stresses in parent material close to the weld. The most accurate predictions are those based on optimised mixed isotropic-kinematic formulations combined with a multi-pass moving heat source welding analysis. © 2011 Elsevier B.V. All rights reserved.
    Original languageEnglish
    Pages (from-to)312-328
    Number of pages17
    JournalComputational Materials Science
    Volume54
    Issue number1
    DOIs
    Publication statusPublished - Mar 2012

    Keywords

    • Annealing
    • Finite element method
    • Measurement
    • Mixed hardening
    • Validation
    • Weld residual stress

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