Accurate prediction of residual stress in stainless steel welds

M. C. Smith, P. J. Bouchard, M. Turski, L. Edwards, R. J. Dennis

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67 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)312-328
Number of pages17
JournalComputational Materials Science
Volume54
Issue number1
DOIs
Publication statusPublished - Mar 2012
Externally publishedYes

Keywords

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

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