Finite element modelling of welded austenitic stainless steel plate with 8-passes
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Date
2014-07-20
Journal Title
Journal ISSN
Volume Title
Publisher
The American Society of Mechanical Engineers
Abstract
The current paper presents a finite element analysis of an eight-pass groove weld in a 316L austenitic stainless steel plate. A dedicated welding heat source modelling tool was employed to produce volumetric body power density data for each weld pass, thus simulating weld-induced thermal loads. Thermocouple measurements and cross-weld macrographs taken from a weld specimen were used for heat source calibration. A mechanical finite element analysis was then conducted, using the calibrated thermal loads and a Lemaitre-Chaboche mixed work-hardening model. The predicted post-weld residual stresses were validated using contour method measurements: good agreement between measured and simulated residual stress fields was observed. A sensitivity analysis was also conducted to identify the boundary conditions that best represent a tack-welded I-beam support, which was present on the specimen back-face during the welding. © 2014 ASME
Description
Keywords
Finite element method, Welding, Austenitic steels, Heat sources, Thermocouples, Hardening, Residual stresses
Citation
Patel, VI, Muránsky, O, Hamelin, CJ, Olson, MD, Hill, MR, & Edwards, L. (2014). Finite element modelling of welded austenitic stainless steel plate with 8-passes. Paper presented to ASME 2014 Pressure Vessels and Piping Conference, Anaheim, California, 20 - 24 July 2014. In ASME 2014 Pressure Vessels and Piping Conference, Anaheim, California, 20 - 24 July 2014, (PVP2014-28163). doi:10.1115/PVP2014-28163