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Publication . Article . 2021

Numerical Investigation of Pressure-Cycling-Induced Fatigue Failure of Wrinkled Energy Pipelines

Navjot Singh; Sreekanta Das; Peter Song; Nader Yoosef-Ghodsi;
Closed Access
Published: 14 Jul 2021 Journal: Journal of Offshore Mechanics and Arctic Engineering, volume 144 (issn: 0892-7219, eissn: 1528-896X, Copyright policy )
Publisher: ASME International

Abstract Wrinkle defects can be complex pipeline deformities to assess and can present the potential to initiate a pipeline release incident as a result of fatigue failure due to pressure cycling, if not dealt with accordingly. Specifically, the stress distribution arising due to applied loads such as internal pressure can vary rapidly due to the complex shape along the wrinkle profile, which may introduce complexities in subsequent assessments such as fatigue life analysis. This paper presents a methodology using numerical simulation for evaluating stress concentration factors of wrinkle defects of varying geometries. A nonlinear finite element model is developed to evaluate stress concentration factors induced by wrinkle defects within steel pipelines subjected to internal pressure. Afterward, data from full-scale laboratory tests for the wrinkled pipe specimens subjected to cyclic pressure fatigue loading are analyzed to evaluate stress concentration factors for comparable wrinkle profiles. Lastly, a comparison between the results of the stress concentration factors evaluated using the finite element method and test data is provided, followed by a brief discussion of potential sources of discrepancies between results obtained from these methods.

Subjects by Vocabulary

Microsoft Academic Graph classification: Energy (signal processing) Materials science Mechanics Finite element method Stress concentration Fatigue testing Pressure cycling Pipeline transport


Mechanical Engineering, Ocean Engineering

Related Organizations
Funded by
  • Funder: Natural Sciences and Engineering Research Council of Canada (NSERC)
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