An effective multiscale methodology for the analysis of marine flexible risers

EDMANS, BD, PHAM, DC, ZHANG, ZQ, GUO, TF, SRIDHAR, N and STEWART, G (2019). An effective multiscale methodology for the analysis of marine flexible risers. Journal of Marine Science and Engineering, 7 (10), p. 340.

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Official URL: https://www.mdpi.com/2077-1312/7/10/340
Link to published version:: https://doi.org/10.3390/jmse7100340
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    Abstract

    Life extension is an attractive option for subsea flexible risers nearing the end of their design lives. However, techniques for assessing accumulated fatigue damage in flexible risers are often associated with large uncertainties due to the simplified calculation approaches typically used. One approach to reducing uncertainties is the inclusion of nonlinearities in riser structural response and consistent linking between global and local models. In this article, we present the elements of a numerical multiscale procedure capable of predicting the stresses that lead to fatigue damage in flexible pipes, namely: a nonlinear beam element, a nonlinear section response model and a detailed finite element model; the consistent integration of models developed for different length scales; and finally a validation of the flexible riser large-scale model.

    Item Type: Article
    Uncontrolled Keywords: Finite Element Methods; Multiscale; Structures; Constitutive Equations; 0405 Oceanography; 0704 Fisheries Sciences; 0911 Maritime Engineering
    Identification Number: https://doi.org/10.3390/jmse7100340
    Page Range: p. 340
    SWORD Depositor: Symplectic Elements
    Depositing User: Symplectic Elements
    Date Deposited: 02 Feb 2022 17:57
    Last Modified: 03 Feb 2022 08:00
    URI: http://shura.shu.ac.uk/id/eprint/29615

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