Welding Residual Distortions in Ring-Stiffened Pipes

[+] Author and Article Information
B. L. Josefson

Division of Solid Mechanics, Chalmers University of Technology, S-412 96, Göteborg, Sweden

L. O. Wikander

Division of Computer Aided Design, Luleå University of Technology, S-971 87 Luleå, Sweden

J. F. Hederstierna, F. K. Johansson

Division of Solid Mechanics, Chalmers University of Technology, Göteborg, Sweden

J. Offshore Mech. Arct. Eng 118(2), 121-126 (May 01, 1996) (6 pages) doi:10.1115/1.2828820 History: Received July 26, 1995; Revised January 17, 1996; Online December 17, 2007


A fast and simple method for the determination of the residual deformation for a class of welding problems, ring-stiffened pipes, is proposed. The method can predictradial as well as angular distortion of the thin-walled pipe-ring-stiffener/flange assembly. The pipe and stiffener material is elasto-plastic. In particular, the accumulation of deformation in multipass welding is incorporated in the model. Each weld pass is treated separately. This facilitates the assessment of the influence of the sequence in which the weld passes are deposited on the residual deformation state. The method will be included in a conversational knowledge-based “expert” system for the production of a welded ring-stiffened pipe.

Copyright © 1996 by The American Society of Mechanical Engineers
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