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https://apo.ansto.gov.au/dspace/handle/10238/7758
Title: | A validated numerical model for residual stress predictions in an eight-pass-welded stainless steel plate |
Authors: | Patel, VI Muránsky, O Hamelin, CJ Olson, MD Hill, MR Edwards, L |
Keywords: | Welding Residual stresses Stainless steels Heat Elements Data |
Issue Date: | 6-Feb-2014 |
Publisher: | Trans Tech Publications |
Citation: | Patel, V. I., Muránsky, O., Hamelin, C. J., Olson, M. D., Hill, M. R., & Edwards, L. (2014). A validated numerical model for residual stress predictions in an eight-pass-welded stainless steel plate. Materials Science Forum, 777, 46-51 doi:10.4028/www.scientific.net/MSF.777.46 |
Abstract: | Welding processes create a complex transient state of temperature that results in post-weld residual stresses. The current work presents a finite element (FE) analysis of the residual stress distribution in an eight-pass slot weld, conducted using a 316L austenitic stainless steel plate with 308L stainless steel filler metal. A thermal FE model is used to calibrate the transient thermal profile applied during the welding process. Time-resolved body heat flux data from this model is then used in a mechanical FE analysis to predict the resultant post-weld residual stress field. The mechanical analysis made use of the Lemaitre-Chaboche mixed isotropic-kinematic work-hardening model to accurately capture the constitutive response of the 316L weldment during the simulated multi-pass weld process, which results in an applied cyclic thermo-mechanical loading. The analysis is validated by contour method measurements performed on a representative weld specimen. Reasonable agreement between the predicted longitudinal residual stress field and contour measurement is observed, giving confidence in the results of measurements and FE weld model presented. |
Gov't Doc #: | 7320 |
URI: | http://dx.doi.org/10.4028/www.scientific.net/MSF.777.46 http://apo.ansto.gov.au/dspace/handle/10238/7758 |
ISSN: | 1662-9752 |
Appears in Collections: | Journal Articles |
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