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  • Numerical analysis on the buckling behaviour of curved-crease origami pipelines

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    Talebian1161835-Published.pdf (1.188Mb)
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    Version of Record (VoR)
    Author(s)
    Guo, Z
    Gattas, J
    Karampour, H
    Wang, S
    Albermani, F
    Griffith University Author(s)
    Karampour, Hassan
    Year published
    2016
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    Abstract
    External pressure loadings in sub-sea pipelines can generate catastrophic structural instabilities such as propagation buckling. This failure mode is typified by a pipe collapse (snap-through phenomenon) that occurs at an initiation pressure PIand a subsequent propagation of the collapse to pipe ends that occurs at a propagation pressure PP. Recent studies have shown that pipelines with a textured geometry, corresponding to the post-buckled shape of a thin-walled cylindrical pipe under axial compression, are able to substantially increase PI, PP, and thus resistance to propagation buckling, compared to conventional smooth ...
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    External pressure loadings in sub-sea pipelines can generate catastrophic structural instabilities such as propagation buckling. This failure mode is typified by a pipe collapse (snap-through phenomenon) that occurs at an initiation pressure PIand a subsequent propagation of the collapse to pipe ends that occurs at a propagation pressure PP. Recent studies have shown that pipelines with a textured geometry, corresponding to the post-buckled shape of a thin-walled cylindrical pipe under axial compression, are able to substantially increase PI, PP, and thus resistance to propagation buckling, compared to conventional smooth pipelines. This study investigates the performance of alternative post-buckled shapes observed in thin-walled pipelines under hydrostatic loading. These shapes correspond closely to a geometric family known as curved-crease origami and so a geometric definition is developed to map geometric parameters from origami to pipelines. A numerical analysis is then conducted on two curved-crease forms and comparative smooth and textured forms. Textured and smooth numerical models show good correspondence with previously reported post-buckling behaviour. One curved crease form is shown to have an increase in PPthat is 10.8% greater than the textured pipeline and 131.8% greater than smooth.
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    Conference Title
    Proceedings of the Twelfth ISOPE Pacific-Asia Offshore Mechanics Symposium (PACOMS 2016)
    Publisher URI
    https://onepetro.org/ISOPEPACOMS/proceedings-abstract/PACOMS16/All-PACOMS16/ISOPE-P-16-104/25964
    Copyright Statement
    © 2016 ISOPE. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the conference's website for access to the definitive, published version.
    Subject
    Maritime Engineering
    Publication URI
    http://hdl.handle.net/10072/402543
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    • Conference outputs

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