Effect of the interpass temperature on the predicted residual stress distributions in a multipass welded piping branch junction
- 1 February 2008
- journal article
- research article
- Published by SAGE Publications in The Journal of Strain Analysis for Engineering Design
- Vol. 43 (2), 109-119
- https://doi.org/10.1243/03093247jsa314
Abstract
A sequentially coupled three‐dimensional thermomechanical finite element model has been developed to predict residual stress distributions in a multipass welded piping branch junction. The residual stresses at the branch and run pipe cross‐sections, as well as along the circumferential weldlines on the outer surfaces of both the run and the branch pipes and on the inner surface of the branch pipe, are predicted. Three levels of interpass temperature have been selected to investigate their effect on the peak residual stresses. It is revealed that the interpass temperature has a significant effect on the residual stresses. As the interpass temperature is increased, both the peak hoop and the axial residual stresses at the run and branch cross‐sections decrease. The peak normal stresses along the circumferential weldline on the outer surface of the run pipes are also reduced. However, increasing the interpass temperature had a negligible effect on the peak tangential residual stresses along the circumferential weld line on the inner surface of the branch pipe. The results presented and the modelling technique described in the current study can be used towards formulating a recommendation to optimize residual stress profiles in multipass welded complex geometries through better interpass temperature control.Keywords
This publication has 8 references indexed in Scilit:
- Finite Element Prediction of Residual Stress Distributions in a Multipass Welded Piping Branch JunctionJournal of Pressure Vessel Technology, 2006
- Finite Element Simulation of Multipass Welding: Full Three-Dimensional Versus Generalized Plane Strain or Axisymmetric ModelsThe Journal of Strain Analysis for Engineering Design, 2005
- Finite Element Predictions of Temperature Distributions in a Multipass Welded Piping Branch JunctionJournal of Pressure Vessel Technology, 2005
- Effect of welding sequences on residual stressesComputers & Structures, 2003
- Effects of Repair Weld Length on Residual Stress DistributionJournal of Pressure Vessel Technology, 2001
- Measurement and prediction of residual stresses in thick-section steel weldsThe Journal of Strain Analysis for Engineering Design, 2000
- A parametric study of residual stresses in multi-pass butt-welded stainless steel pipesInternational Journal of Pressure Vessels and Piping, 1998
- The Effect of Pipe Thickness on Residual Stresses due to Girth WeldsJournal of Pressure Vessel Technology, 1982