The impact of axi-symmetric boundary conditions on predicted residual stress and shrinkage in a PWR nozzle dissimilar metal weld

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dc.contributor.authorBendeich, PJen_AU
dc.contributor.authorMuránsky, Oen_AU
dc.contributor.authorHamelin, CJen_AU
dc.contributor.authorSmith, MCen_AU
dc.contributor.authorEdwards, Len_AU
dc.date.accessioned2023-01-26T22:37:04Zen_AU
dc.date.available2023-01-26T22:37:04Zen_AU
dc.date.issued2012-07-15en_AU
dc.date.statistics2022-12-13en_AU
dc.description.abstractSimulation of a dissimilar metal weld (DMW) in a pressurised water reactor (PWR) nozzle was performed to predict both axial distortion and hoop residual stresses in the weld. For this work a computationally efficient axi-symmetric finite element (FE) simulation was carried out rather than a full 3D analysis. Due to the 2-dimensional nature of the analysis it was necessary to examine the effect of structural restraint during welding of the main dissimilar metal weld (DMW). Traditionally this type of analysis is set up to allow one end of the structure, in this case the safe-end forging, to be unrestrained in the axial direction during welding. In reality axial expansion and subsequent contraction of deposited weld metal at the current torch position is restrained by solidified material both ahead and behind the torch. Thus the conventional axi-symmetric analysis is under-restrained in the axial direction at least during the early weld passes. The significance of this was examined by repeating the current simulation with the safe-end forging fixed to limit expansion during the heat up cycle. Contraction was however, allowed during cooling cycle. This modified boundary control method provided a significantly improved prediction of the axial distortion across the weld as well as improved prediction of through wall axial and hoop residual stresses. Copyright © 2012 The American Society of Mechanical Engineersen_AU
dc.identifier.booktitleASME 2012 Pressure Vessels and Piping Conference, Volume 6, Materials and fabrication, Parts A and B : July 15-19, 2012, Toronto, Ontario, Canadaen_AU
dc.identifier.citationBendeich, P. J., Muránsky, O., Hamelin, C. J., Smith, M. C., & Edwards, L. (2012). The impact of axi-symmetric boundary conditions on predicted residual stress and shrinkage in a PWR nozzle dissimilar metal weld. Paper presented at the ASME 2012 Pressure Vessels and Piping Conference, Toronto, Ontario, Canada, July 15–19, 2012. In ASME 2012 Pressure Vessels and Piping Conference, Volume 6, Materials and fabrication, Parts A and B : July 15-19, 2012, Toronto, Ontario, Canada, (Vol. 55058, pp. 1139-1145). New York: American Society of Mechanical Engineers. doi:10.1115/PVP2012-78407en_AU
dc.identifier.conferenceenddate19 July 2012en_AU
dc.identifier.conferencenameASME 2012 Pressure Vessels and Piping Conferenceen_AU
dc.identifier.conferenceplaceToronto, Ontario, Canadaen_AU
dc.identifier.conferencestartdate15 July 2012en_AU
dc.identifier.isbn978-0-7918-5505-8en_AU
dc.identifier.pagination1139-1145en_AU
dc.identifier.placeofpublicationNew Yorken_AU
dc.identifier.urihttps://doi.org/10.1115/PVP2012-78407en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/14510en_AU
dc.identifier.volume55058en_AU
dc.language.isoenen_AU
dc.publisherAmerican Society of Mechanical Engineers (ASME)en_AU
dc.subjectBoundary-value problemsen_AU
dc.subjectMetalsen_AU
dc.subjectNozzlesen_AU
dc.subjectShrinkageen_AU
dc.subjectResidual stressesen_AU
dc.subjectSimulationen_AU
dc.subjectForgingen_AU
dc.subjectWeldingen_AU
dc.subjectFinite element methoden_AU
dc.subjectThermodynamic cyclesen_AU
dc.titleThe impact of axi-symmetric boundary conditions on predicted residual stress and shrinkage in a PWR nozzle dissimilar metal welden_AU
dc.typeConference Paperen_AU
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