Accurate prediction of residual stress in stainless steel welds
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Date
2012-03
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
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.
Description
Keywords
Welding, Residual stresses, Stress intensity factors, Hardening, Annealing, Stainless steel-316, Validation
Citation
Smith, M. C., Bouchard, P. J., Turski, M., Edwards, L., & Dennis, R. J. (2012). Accurate prediction of residual stress in stainless steel welds. Computational Materials Science, 54, 312-328. doi:10.1016/j.commatsci.2011.10.024