Experimental Observations on Collapse Mechanisms of Faceted Subsea Pipeline
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Karampour, H
Alsanat, H
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Shanghai, China
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Abstract
This study investigates the collapse mechanisms and capacity of the faceted pipe against the conventional pipe under external hydrostatic pressure. The experimental protocol is comprised of additively manufactured (3D-printed) faceted and conventional titanium pipes (Ti6Al4V-0406) tested inside a 30MPa hyperbaric chamber. A finite element analysis (FEA) is presented and is validated against the experimental results. Using the validated FE model, the major geometric parameters affecting the collapse capacity of faceted pipe were investigated. The proposed FE model can accurately predict the collapse pressure of faceted and conventional pipes. Results showed that the faceted pipe can boost the collapse capacity by at least an 80% increase compared to the conventional pipe. Also, the collapse mode was observed.
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Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference
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2
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© 2022 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.
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Ocean engineering
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Alrsai, M; Karampour, H; Alsanat, H, Experimental Observations on Collapse Mechanisms of Faceted Subsea Pipeline, Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference, 2022, 2, pp. 1616-1621