Optimisation of mixed hardening material constitutive models for weld residual stress simulation using the NeT task group 1 single bead on plate benchmark problem.

Simple item page
dc.contributor.authorSmith, MCen_AU
dc.contributor.authorNadri, Ben_AU
dc.contributor.authorSmith, ACen_AU
dc.contributor.authorCarr, DGen_AU
dc.contributor.authorBendeich, PJen_AU
dc.contributor.authorEdwards, Len_AU
dc.date.accessioned2010-08-10T05:11:28Zen_AU
dc.date.available2010-08-10T05:11:28Zen_AU
dc.date.issued2009-07-26en_AU
dc.date.statistics2009-07-26en_AU
dc.description.abstractA single weld bead deposited on a flat plate is a deceptively simple problem that is in practice a challenge for both measurement and prediction of weld residual stresses. Task Group 1 of the NeT collaborative network has examined this problem in an extensive programme of measurement and simulation extending from 2002 to 2008. As a result, the NeT bead on plate forms an ideal benchmark problem for the development of weld residual stress simulation techniques. One of the conclusions of NeT Task Group 1 is that the most accurate predictions of weld residual stresses in austenitic steels are achieved using mixed isotropic-kinematic material constitutive models. However, the use of these models can require both extensive materials data, and compromises in fitting either the monotonic or cyclic responses. This paper reports a detailed matrix of sensitivity studies aimed at optimising the behaviour of mixed hardening models in welding simulation, using the Lemaitre-Chaboche formulation in the ABAQUS finite element code. Predicted stresses and strains in the NeT bead on plate specimen are compared with the extensive database of residual stress measurements. Further studies examine sensitivity to the handling of high temperature inelastic strains, using a novel two-stage annealing functionality implemented within ABAQUS. The results show that, overall, the most accurate predictions are made if the Lemaitre-Chaboche parameters are optimised to fit the monotonic response over the first 2% of plastic strain. However, further improvements in prediction could be achieved if the constitutive model were capable of independently fitting both the monotonic and saturated cyclic response of the material.en_AU
dc.identifier.booktitleProceedings of the ASME Pressure Vessels and Piping Conference 2009 - Volume 6: Materials and Fabrication, Parts A and Ben_AU
dc.identifier.citationSmith, M. C., Nadri, B., Smith, A. C., Carr, D. G., Bendeich, P. J., & Edwards, L. (2009). Optimisation of mixed hardening material constitutive models for weld residual stress simulation using the NeT task group 1 single bead on plate benchmark problem. Paper presented to the ASME 2009 Pressure Vessels and Piping Conference (PVP2009), 26th – 30th July 2009. Prague, Czech Republic: Hilton Prague. In Proceedings of the ASME Pressure Vessels and Piping Conference 2009 - Materials and Fabrication, Parts A and B, 6, pp. 303-318 (PVP2009-77158). doi:10.1115/PVP2009-77158en_AU
dc.identifier.conferenceenddate30 July 2009en_AU
dc.identifier.conferencenameASME 2009 Pressure Vessels and Piping Conference (PVP2009)en_AU
dc.identifier.conferenceplacePrague, Czech Republicen_AU
dc.identifier.conferencestartdate26 July 2009en_AU
dc.identifier.govdoc2284en_AU
dc.identifier.isbn9780791843697en_AU
dc.identifier.issn0277-027Xen_AU
dc.identifier.pagination308-318en_AU
dc.identifier.urihttp://dx.doi.org/10.1115/PVP2009-77158en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2152en_AU
dc.identifier.volume6en_AU
dc.language.isoenen_AU
dc.publisherAmerican Society of Mechanical Engineers (ASME)en_AU
dc.subjectResidual stressesen_AU
dc.subjectSimulationen_AU
dc.subjectBenchmarksen_AU
dc.subjectHardeningen_AU
dc.subjectWelded jointsen_AU
dc.subjectAustenitic steelsen_AU
dc.titleOptimisation of mixed hardening material constitutive models for weld residual stress simulation using the NeT task group 1 single bead on plate benchmark problem.en_AU
dc.typeConference Paperen_AU
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Conference Publications