# Numerical modelling of hot polymer-coated steel pipeline joints in bending

Journal article

McCann, F, Ridolfi, G, Karjadi, E, Demmink, H and Boyd, H (2018). Numerical modelling of hot polymer-coated steel pipeline joints in bending. Ocean Engineering. 160, pp. 354-367. https://doi.org/10.1016/j.oceaneng.2018.04.057
Authors McCann, F, Ridolfi, G, Karjadi, E, Demmink, H and Boyd, H A numerical method to analyse the effect of the application of polymer coatings on the bending resistance of steel pipeline joints is presented. Experiments were conducted to investigate the influence of the thickness of polymer field joint coatings and the cooldown time provided after applying the coatings on the behaviour of pipeline joints when being bent during reeling operations. Temperature readings were obtained from thermocouples inside the polymer field joint coating during the application process, and pipeline ovality measurements were taken during mechanical testing. Thermal modelling of the coating application procedure was developed using COMSOL Multiphysics modelling software; this model is validated against the thermocouple readings, while a mechanical model simulating the pipe being bent to a reel developed in Abaqus finite element modelling software is described. The temperature outputs, areas of stress concentration and pipe ovalities obtained from the experiments are shown to be predicted accurately by the numerical models. After successful validation of the numerical models, a parametric study assessing the influence of field joint coating thickness and cooldown times is described, whose results are used to find an optimal solution to reduce the cooldown time required prior to bending the pipe without buckling. Nonlinear mechanics; Polymers; Reel-lay method; Subsea engineering; Thermo-mechanical modelling; 0905 Civil Engineering; 0911 Maritime Engineering; Civil Engineering 2018 Ocean Engineering 160, pp. 354-367 Elsevier 0029-8018 https://doi.org/10.1016/j.oceaneng.2018.04.057 05 May 2018 17 Apr 2018 16 Apr 2018 McCann_et_al_2018-OceanEng-acceptedversion.pdfLicenseCC BY-NC-ND 4.0File Access LevelOpen

https://openresearch.lsbu.ac.uk/item/86qz6

###### Accepted author manuscript
 McCann_et_al_2018-OceanEng-acceptedversion.pdf License: CC BY-NC-ND 4.0 File access level: Open

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