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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

Dong, P., et al., 1996, “Effect of Weld Residual Stresses on Crack-Opening Area Analysis of Pipes for LBB Applications,” Proc., ASME Pressure Vessel and Piping (PVP) Conference, R. Warke and P. Dong, eds., pp. 47–64.
Brust, F. W., Dong, P., and Zhang, J, 1997, “Influence of Residual Stresses and Weld Repairs on Pipe Fracture,” Proc., ASME Pressure Vessel and Piping Conference, R. Warke and P. Dong, eds., pp. 173–181.
Dong,  P., Hong,  J. K., Zhang,  J., Rogers,  P., Bynum,  J., and Shah,  S., 1998, “Effects of Repair Weld Residual Stresses on Wide-Panel Specimens Loaded in Tension,” ASME J. Pressure Vessel Technol., 120, May, pp. 122–128.
Dong,  P., and Zhang,  J., 2000a, “Residual Stresses in Strength-Mismatched Welds and Implications on Fracture Behavior,” Eng. Fract. Mech., 64, pp. 485–505.
Zhang,  J., Dong,  P., , 2000, “Modeling Weld Residual Stresses in Core Shroud Structures,” Nucl. Eng. Des., 195, pp. 171–187.
Zhang,  J., and Dong,  P., 2000, “Residual Stresses in Welded Moment Frames and Effects on Fracture,” J. Struct. Div. ASCE, 126, No. 3, pp. 306–315.
Dong,  P., and Brust,  F. W., 2000, “Welding Residual Stresses and Effects on Fracture in Pressure Vessel and Piping Components: A Millennium Review and Beyond,” ASME J. Pressure Vessel Technol., The Millennium Issue, 122, May, pp. 329–338.
Shack, W. J., Ellington, W. A., and Pahis, L. E., 1980, “Measurement of Residual Stresses in Type 304 Stainless Steel Butt Weldments, EPRI NP-1413.
Dong, P., Zhang, J., and Li, M. V., 1998, “Computational Modeling of Weld Residual Stresses and Distortions—An Integrated Framework and Industrial Applications, ASME PVP-Vol. 373, Fatigue, Fracture, and Residual Stresses, pp. 311–335.
Rybicki,  E. F., and Stonesifer,  R. B., 1979, “Computation of Residual Stresses Due to Multi-Pass Welds in Piping Systems,” ASME J. Pressure Vessel Technol., 101, pp. 149–154.
Brust,  F. W., and Kanninen,  M. F., 1981, “Analysis of Residual Stresses in Girth-Welded Type 304 Stainless Steel Pipes,” ASME J. Pressure Vessel Technol., 103, Aug., pp. 351–362.
Brust,  F. W., and Rybicki,  E. F., 1981, “A Computational Model of Backlay Welding for Controlling Residual Stresses in Welded Pipes,” ASME J. Pressure Vessel Technol., 103, pp. 226–232.
Karlsson,  R. I., and Josefson,  B. L., 1990, “Three-Dimensional Finite Element Analysis of Temperature and Stresses in a Single-Pass Butt-Welded Pipe,” ASME J. Pressure Vessel Technol., 112, pp. 76–84.
Leung,  C. K., and Pick,  R. J., 1992, “Finite Element Analysis of A Multipass Weld,” Weld. Res. Coun. Bull., 356, pp. 11–33.
Hong, J. K., Dong, P., and Tsai, C. L., 1993, “Finite Element Simulation of Residual Stresses in Multi-Pass Welds,” International Conference Proc. Modeling and Control of Joining Processes, December 8–10, Orlando, FL, pp. 470–476.
Brust, F. W., Dong, P., and Zhang, J., 1997, “A Constitutive Model for Welding Process Simulation Using Finite Element Methods,” Advances in Computational Engineering Science, S. N. Atluri and G. Yagawa, eds., pp. 51–56.
Zhang, J., Dong, P., and Brust, F. W., 1997, “A 3-D Composite Shell Element Model for Residual Stress Analysis of Multi-Pass Welds,” Trans., 14th International Conference on Structural Mechanics in Reactor Technology, SMiRT 14, Lyon, France, Vol. 1., pp. 335–344.
Dong,  P., Hong,  J. K., and Rogers,  P., 1998, “Analysis of Residual Stresses in Al-Li Repair Welds and Mitigation Techniques,” Weld. J. (London), 77, No. 11, Nov., pp. 439s–445s.
Zhang, J., Dong, P., and Bouchard, J., 2000, “Repair Length Effects on Weld Residual Stress Distributions in a Pipe,” ASME PVP-Vol. 410-1, pp. 43–51.
ABAQUS User Manual, 1995, Hibbit, Karlsson & Sorenson, Inc.
Dong, P., 2000, “Modeling of Weld Residual Stresses and Distortions: Computational Procedures and Applications” (Keynote Lecture), Proc. 6th International Conference on Residual Stress (ICRS-6), Oxford, UK, July 10–12, pp. 1223–1235.

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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