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A bonded discrete element method for modeling ship–ice interactions in broken and unbroken sea ice fields

By Oriol Jou Devesa, Miguel Ángel Celigueta Jordana, Juan Salvador Latorre Sánchez, Ferran Arrufat Garcia and Eugenio Oñate Ibáñez de Navarra

Abstract

The final publication is available at Springer via http://dx.doi.org/10.1007/s40571-019-00259-8This work investigates the failure patterns of ice cakes and floe-ice when loaded by a moving and sloping structure (ice-breaking ships and cones). In the paper, we introduce the most frequently encountered ice-infested scenarios, the main characteristics of ice-breaking ships and the predicted failure modes of floe-ice depending on the loading conditions, the structure type and the ice feature dimensions and thickness. For the simulations, a local bonded discrete element method (DEM) is used to model sea ice and its fractures. The packing of bonded spherical particles which reproduce the ice continuum can break due to ship–ice interactions and the failure modes are studied. A set of validation simulations are first carried out. A level ice sheet breaking against an installed ice-breaking cone with different slope angles is studied, and the results are compared with other DEM simulations. Then, a group of bonded DEM simulations are performed to predict the different failure modes produced when an ice-breaking ship bow contacts with ice cakes and floe-ice of different dimensions and thickness, typical in broken ice fields. Finally, the study of breaking a continuous level ice sheet is carried out by modeling with the bonded DEM an “infinite” large domain of sea ice and loaded by a single-degree-of-freedom model of an ice-breaking ship.This research was supported by the NICESHIP project of the Office of Naval Research Global under Navy Grant N62909-16-1-2236 and the ICEBREAKER Proof of Concept project of the European Research Council.Peer Reviewe

Topics: Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits, Àrees temàtiques de la UPC::Física::Física de l'estat sòlid, Icebreakers (Ships), Ice mechanics--Mathematical models, Discrete element method (DEM), Bonded DEM, Level ice, Floe-ice, Ice fractures, Ice-breaking ship–ice interactions, Mecànica del gel
Publisher: 'Springer Science and Business Media LLC'
Year: 2019
DOI identifier: 10.1007/s40571-019-00259-8
OAI identifier: oai:upcommons.upc.edu:2117/184379
Provided by: UPCommons
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