On the ratchet analysis of a cracked welded pipe

Tianbai Li, Haofeng Chen, Weihang Chen, James Michael Ure

Research output: Contribution to journalArticle

2 Citations (Scopus)
122 Downloads (Pure)

Abstract

This paper presents the ratchet limit analysis of a pipe with a symmetric crack in a mismatched weld by using the extended Linear Matching Method (LMM). Two loading conditions are considered: i) a cyclic temperature load and a constant internal pressure; and ii) a cyclic temperature load and a constant axial tension. Individual effects of i) the geometry of the Weld Metal (WM), ii) the size of the crack, iii) the location of the crack and iv) the yield stress of WM on the ratchet limits, maximum temperature ranges to avoid ratchetting and limit loads are investigated. Influence functions of the yield stress of WM on the maximum temperature ranges and limit loads are generated. The results confirm the applicability of the extended LMM to the cracked welded pipe.
Original languageEnglish
Pages (from-to)011203
Number of pages8
JournalJournal of Pressure Vessel Technology
Volume134
Issue number1
Early online date1 Dec 2011
DOIs
Publication statusPublished - Feb 2012

Keywords

  • shakedown
  • ratchet limit
  • limit load
  • crack
  • welded pipe

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