Finite Element Prediction of Residual Stress Distributions in a Multipass Welded Piping Branch Junction

2.50
Hdl Handle:
http://hdl.handle.net/2436/29645
Title:
Finite Element Prediction of Residual Stress Distributions in a Multipass Welded Piping Branch Junction
Authors:
Jiang, Wei; Yahiaoui, Kadda
Abstract:
Piping branch junctions and nozzle attachments to main pressure vessels are common engineering components used in the power, oil and gas, and shipbuilding industries amongst others. These components are usually fabricated by multipass welding. The latter process is known to induce residual stresses at the fabrication stage, which can have severe adverse effects on the in-service behavior of such critical components. It is thus desirable if the distributions of residual stresses can be predicted well in advance of welding execution. This paper presents a comprehensive study of three dimensional residual stress distributions in a stainless steel tee branch junction during a multipass welding process. A full three dimensional thermomechanical finite element model has been developed for this purpose. A newly developed meshing technique has been used to model the complex intersection areas of the welded junction with all hexahedral elements. Element removal/reactivate technique has been employed to simulate the deposition of filler material. Material, geometry, and boundary nonlinearities associated with welding were all taken into account. The analysis results are presented in the form of stress distributions circumferentially along the weld line on both run and branch pipes as well as at the run and branch cross sections. In general, this computational model is capable of predicting three dimensional through-thickness welding residual stress, which can be valuable for structural integrity assessments of complex welded geometries. (ASME)
Citation:
Journal of Pressure Vessel Technology, 129(4): 601-608
Publisher:
ASME (American Society of Mechanical Engineers)
Journal:
Journal of Pressure Vessel Technology
Issue Date:
2007
URI:
http://hdl.handle.net/2436/29645
DOI:
10.1115/1.2767343
Additional Links:
http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JPVTAS000129000004000601000001&idtype=cvips&gifs=yes
Type:
Article
Language:
en
Description:
The research presented extends that on stress and temperature distributions in welded oil/gas steel pipe junctions, research that has resulted in Yahiaoui being invited to present to: Ecole de Technologie Supérieure, University of Québec, Montreal, August 2006, and The Structural Technology and Materials Group of the Institute of Mechanical Engineers October 2006.
ISSN:
00949930
Appears in Collections:
Engineering and Technology

Full metadata record

DC FieldValue Language
dc.contributor.authorJiang, Wei-
dc.contributor.authorYahiaoui, Kadda-
dc.date.accessioned2008-06-06T15:58:26Z-
dc.date.available2008-06-06T15:58:26Z-
dc.date.issued2007-
dc.identifier.citationJournal of Pressure Vessel Technology, 129(4): 601-608en
dc.identifier.issn00949930-
dc.identifier.doi10.1115/1.2767343-
dc.identifier.urihttp://hdl.handle.net/2436/29645-
dc.descriptionThe research presented extends that on stress and temperature distributions in welded oil/gas steel pipe junctions, research that has resulted in Yahiaoui being invited to present to: Ecole de Technologie Supérieure, University of Québec, Montreal, August 2006, and The Structural Technology and Materials Group of the Institute of Mechanical Engineers October 2006.en
dc.description.abstractPiping branch junctions and nozzle attachments to main pressure vessels are common engineering components used in the power, oil and gas, and shipbuilding industries amongst others. These components are usually fabricated by multipass welding. The latter process is known to induce residual stresses at the fabrication stage, which can have severe adverse effects on the in-service behavior of such critical components. It is thus desirable if the distributions of residual stresses can be predicted well in advance of welding execution. This paper presents a comprehensive study of three dimensional residual stress distributions in a stainless steel tee branch junction during a multipass welding process. A full three dimensional thermomechanical finite element model has been developed for this purpose. A newly developed meshing technique has been used to model the complex intersection areas of the welded junction with all hexahedral elements. Element removal/reactivate technique has been employed to simulate the deposition of filler material. Material, geometry, and boundary nonlinearities associated with welding were all taken into account. The analysis results are presented in the form of stress distributions circumferentially along the weld line on both run and branch pipes as well as at the run and branch cross sections. In general, this computational model is capable of predicting three dimensional through-thickness welding residual stress, which can be valuable for structural integrity assessments of complex welded geometries. (ASME)en
dc.language.isoenen
dc.publisherASME (American Society of Mechanical Engineers)en
dc.relation.urlhttp://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JPVTAS000129000004000601000001&idtype=cvips&gifs=yesen
dc.subjectWelding processen
dc.subjectFinite element analysisen
dc.subjectGalerkin methodsen
dc.subjectEngineering technologyen
dc.subjectMechanical engineeringen
dc.subjectPiping componentsen
dc.subjectMultipass weldingen
dc.subjectMetal componentsen
dc.subjectResidual stressen
dc.subjectModellingen
dc.subject3D modellingen
dc.subjectWelded jointsen
dc.titleFinite Element Prediction of Residual Stress Distributions in a Multipass Welded Piping Branch Junctionen
dc.typeArticleen
dc.identifier.journalJournal of Pressure Vessel Technologyen
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