An Approximate Model for an Elastic-Plastic Pipe Element Under Combined Loading

[+] Author and Article Information
L. D. Larson, W. E. Franzen

Bettis Atomic Power Laboratory, Westinghouse Electric Corp., West Mifflin, Pa.

W. F. Stokey

Department of Mechanical Engineering, Carnegie-Mellon University, Pittsburgh, Pa.

J. Pressure Vessel Technol 97(1), 22-28 (Feb 01, 1975) (7 pages) doi:10.1115/1.3454248 History: Received August 08, 1974; Online October 25, 2010


An approximate model for the elastic-plastic analysis of a pipe element under combined loading is developed. The model is obtained by generalizing a limit load solution for combined pressure, bending, torsion and axial load to include strain hardening. For various combinations of loading of tubes, curvatures and twist angles are predicted and compared with experimental results and those predicted by a more rigorous analytical approach. The comparison shows that good results are obtained from the approximate model.

Copyright © 1975 by ASME
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