A 3-D sequential coupling finite element simulation is performed to investigate the temperature field and residual stress in the dissimilar metal weld of a PWR safe-end and nozzle. Chemical compositions and welding residual stress of the dissimilar metal weld are measured. And residual stress of the welded joint of nozzle and safe-end has been studied, aiming to provide a reference for the fabrication and operation of safe-end and nozzle. The testing results show that the experiment results are consistent with FE results. The FE simulation method can be used for the welding residual analysis of the welded joint. And, the calculating results show that large hoop (S33) and axial (S22) of welding residual stresses are generated in the weld metal. The maximum tensile and compressive stresses of S22 and S33 are all in the weld metal or at the interface of the nozzle and weld metal. Due to the difference in mechanical properties and chemical compositions between the base metal and weld metal, a discontinuous stress distribution is generated across the interface between the weld metal and nozzle.
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ASME 2016 Pressure Vessels and Piping Conference
July 17–21, 2016
Vancouver, British Columbia, Canada
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-5043-5
PROCEEDINGS PAPER
Finite Element Simulation and Experimental Investigation of Welding Residual Stress for PWR Safe-End
Guodong Zhang,
Guodong Zhang
Suzhou Nuclear Power Research Institute, Suzhou, China
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Fei Xue,
Fei Xue
Suzhou Nuclear Power Research Institute, Suzhou, China
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Yanfen Zhao,
Yanfen Zhao
Suzhou Nuclear Power Research Institute, Suzhou, China
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Lu Zhang
Lu Zhang
Suzhou Nuclear Power Research Institute, Suzhou, China
Search for other works by this author on:
Guodong Zhang
Suzhou Nuclear Power Research Institute, Suzhou, China
Fei Xue
Suzhou Nuclear Power Research Institute, Suzhou, China
Yanfen Zhao
Suzhou Nuclear Power Research Institute, Suzhou, China
Lu Zhang
Suzhou Nuclear Power Research Institute, Suzhou, China
Paper No:
PVP2016-64003, V06BT06A083; 8 pages
Published Online:
December 1, 2016
Citation
Zhang, G, Xue, F, Zhao, Y, & Zhang, L. "Finite Element Simulation and Experimental Investigation of Welding Residual Stress for PWR Safe-End." Proceedings of the ASME 2016 Pressure Vessels and Piping Conference. Volume 6B: Materials and Fabrication. Vancouver, British Columbia, Canada. July 17–21, 2016. V06BT06A083. ASME. https://doi.org/10.1115/PVP2016-64003
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