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TECHNICAL PAPERS

Residual Stress Analyses of a Multi-Pass Girth Weld: 3-D Special Shell Versus Axisymmetric Models

[+] Author and Article Information
P. Dong

Center for Welded Structures Research, Battelle, Columbus, OH 43201-2693e-mail: dongp@battelle.org

J. Pressure Vessel Technol 123(2), 207-213 (Oct 13, 2000) (7 pages) doi:10.1115/1.1359527 History: Received July 07, 2000; Revised October 13, 2000
Copyright © 2001 by ASME
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References

Figures

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Girth weld mock-up specimen and idealized weld profile—(a) inner MMA weld profile; (b) outer SA weld profile; (c) pipe girth weld mock-up
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Finite element models for girth weld mock-up—(a) axisymmetric model; (b) axisymmetric model (weld area); (c) shell element model
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Special 3-D shell element procedures for multi-pass welds
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Predicted residual stress distributions—axisymmetric model (six-pass); (a) axial residual stress (MPa), (b) hoop residual stress (MPa)
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Comparison of predicted and measured residual stresses—(a) axial stresses (outer surface), (b) axial stresses (inner surface), (c), hoop stresses (outer surface), (d) hoop stresses (inner surface)
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Predicted temperature and instantaneous stress distributions on the outer surface at t=120 s—(a) temperature, (b) axial stress, (c) hoop stress
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Predicted residual stress distributions on the outer surface—(a) axial residual stress, (b) hoop residual stress
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Axial residual stress distributions along weld girth circumference at 5 mm from weld centerline—pipe wall thickness effects
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Axial residual stress distributions at about 90 deg from weld start position—(a) inner surface, (b) outer surface

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