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RESEARCH PAPERS

Analysis for Wrinkling Behavior of Girth-Welded Line Pipe

[+] Author and Article Information
L. T. Souza

Microcadam Inc., 335 South Grand Avenue, Suite 2300, Los Angeles, CA 90071

D. W. Murray

Department of Civil Engineering, University of Alberta, Edmonton, Alberta T6G 2G7, Canada

J. Offshore Mech. Arct. Eng 121(1), 53-61 (Feb 01, 1999) (9 pages) doi:10.1115/1.2829555 History: Received March 06, 1998; Revised September 11, 1998; Online December 17, 2007

Abstract

The paper presents results for finite-element analysis of full-sized girth-welded specimens of line pipe and compares these results with the behavior exhibited by test specimens subjected to constant axial force, internal pressure, and monotonically increasing curvatures. Recommendations for the “best” type of analytical finite element model are given. Comparisons between the behavior predicted analytically and the observed behavior of the experimental test specimens are made. The mechanism of wrinkling is explained and the evolution of the deformed configurations for different wrinkling modes is examined. It is concluded that the analytical tools now available are sufficiently reliable to predict the behavior of pipe in a manner that was not previously possible and that this should create a new era for the design and assessment of pipelines if the technology is properly exploited by industry.

Copyright © 1999 by The American Society of Mechanical Engineers
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