Finite Element Simulation of a Circumferential Through-Thickness Crack in a Cylinder

Sutham Arun, Andrew Sherry, M C Smith, Mohammad Sheikh

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    This paper presents the results of a structural integrity assessment of a large-scale test undertaken as part of the EU programme STYLE on a repair welded pipe containing a circumferential through-thickness crack. The pipe was manufactured from two Esshete 1250 stainless steel pipes joined by a girth weld containing a deep repair. A through-thickness circumferential pre-crack was introduced to the centre of the repair prior to testing in four-point bend. The assessment used a finite element model created in Abaqus, with the weld residual stress introduced by an iterative technique. Linear elastic fracture mechanics was used to evaluate the stress intensity factor KI for the defect and elastic-plastic analyses were performed to characterise the crack driving force J along the crack front. The predicted crack mouth opening displacement as a function of load was compared with the test results and the derived variation in J used to predict crack initiation and growth. The results predicted the global behaviour of the test to within approximately 7% at final load, and the position of maximum crack growth. However, the final extent of crack extension is under-predicted. Reasons for this underprediction are suggested.
    Original languageEnglish
    Title of host publicationASME 2014 Pressure Vessels and Piping Conference
    Place of PublicationAnaheim, California, USA
    PublisherAmerican Society of Mechanical Engineers
    Number of pages11
    Volume3
    DOIs
    Publication statusPublished - Jul 2014
    EventProceedings of the ASME 2014 Pressure Vessels & Piping Conference (PVP2014) -
    Duration: 20 Jul 201424 Jul 2014

    Conference

    ConferenceProceedings of the ASME 2014 Pressure Vessels & Piping Conference (PVP2014)
    Period20/07/1424/07/14

    Keywords

    • Simulation
    • Fracture (Materials)
    • Finite element analysis
    • Cylinders

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