A Finite-Element Model for Residual Stresses and Deflections in Girth-Butt Welded Pipes

[+] Author and Article Information
E. F. Rybicki, D. W. Schmueser, R. W. Stonesifer, J. J. Groom

Applied Solid Mechanics Section, Battelle’s Columbus Laboratories, Columbus, Ohio 43201

H. W. Mishler

Fabrication and Quality Control Section, Battelle’s Columbus Laboratories, Columbus, Ohio 43201

J. Pressure Vessel Technol 100(3), 256-262 (Aug 01, 1978) (7 pages) doi:10.1115/1.3454464 History: Received March 23, 1978; Online October 25, 2010


Computational models for predicting transient temperature distributions, residual stresses, and residual deflections for girth-butt welds are described. Comparisons of predicted and measured temperatures for a two-pass welded pipe show agreement to within 9 percent and 17 percent of the measured values for passes one and two, respectively, the model for predicting residual stresses and residual deflections is based on a finite-element representation recognizing individual passes, temperature dependent elastic-plastic constitutive behavior, elastic unloading for material in the nonlinear stress-strain range, and changes in geometry due to the deformation of each weld pass. Load incrementation and incremental stress-strain relations are also used. Results for a two-pass girth-butt welded pipe show good correlation between residual stresses and residual deflections obtained from the computational model and data obtained from a welded 304 stainless steel pipe.

Copyright © 1978 by ASME
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