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 language | English |
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Pages (from-to) | 312-328 |
Number of pages | 17 |
Journal | Computational Materials Science |
Volume | 54 |
Issue number | 1 |
DOIs | |
Publication status | Published - Mar 2012 |
Keywords
- Annealing
- Finite element method
- Measurement
- Mixed hardening
- Validation
- Weld residual stress