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Ratchet limits for a crack in a welded pipe subjected to a cyclic temperature load an a constant mechanical load

Li, Tianbai and Chen, Haofeng and Chen, Weihang and Ure, James Michael (2011) Ratchet limits for a crack in a welded pipe subjected to a cyclic temperature load an a constant mechanical load. In: ASME Pressure Vessels and Piping Conference, 2011-07-17 - 2011-07-21, Baltimore, Maryland,.

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    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.

    Item type: Conference or Workshop Item (Paper)
    ID code: 31444
    Notes: Proceedings Published as a CD-ROM/DVD
    Keywords: crack, ratchet limit, limit load, welded pipe, maximum temperature range, Mechanical engineering and machinery, Mining engineering. Metallurgy, Mechanical Engineering, Mechanics of Materials, Computational Mechanics, Metals and Alloys, Analysis
    Subjects: Technology > Mechanical engineering and machinery
    Technology > Mining engineering. Metallurgy
    Department: Faculty of Engineering > Mechanical and Aerospace Engineering
    Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 09 Jun 2011 16:02
    Last modified: 07 Sep 2014 09:25
    URI: http://strathprints.strath.ac.uk/id/eprint/31444

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