کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1562000 1513955 2012 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Accurate prediction of residual stress in stainless steel welds
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
Accurate prediction of residual stress in stainless steel welds
چکیده انگلیسی

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.


► Residual stresses and tensile property variation in austenitic steel weldments are characterised with high reliability.
► Isotropic, kinematic, and mixed hardening models are fitted and applied in moving heat source finite element simulations.
► Optimised mixed hardening models give the most accurate predictions of residual stress and tensile property variation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 54, March 2012, Pages 312–328
نویسندگان
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