Accurate prediction of residual stress in stainless steel welds

被引：80

作者：

Smith, M. C. ^{[1
]}

Bouchard, P. J. ^{[2
]}

Turski, M. ^{[2
]}

Edwards, L. ^{[3
]}

Dennis, R. J. ^{[4
]}

机构：

[1] EDF Energy Nucl Generat, Gloucester GL4 3RS, England

[2] Open Univ, Milton Keynes MK7 6AA, Bucks, England

[3] Australian Nucl Sci & Technol Org, Menai, NSW 2234, Australia

[4] Fraser Nash Consultancy Ltd, Coll Green, Bristol BS1 5TE, Avon, England

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2012年 / 54卷

关键词：

Weld residual stress; Mixed hardening; Annealing; Finite element method; Measurement; Validation; ROUND-ROBIN;

D O I：

10.1016/j.commatsci.2011.10.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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. (C) 2011 Elsevier By. All rights reserved.

引用

页码：312 / 328

页数：17

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