3D DEM study on the effect of ridge keel width on rubble resistance on ships

In this paper, we use 3D discrete element method (DEM) to simulate ship penetration through a non-cohesive rubble pile presenting a ridge keel. We study the effect of the pile width on the rubble resistance and the relation between the resistance records and rubble deformation. The peak rubble resis...

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Bibliographic Details
Published in:Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology
Main Authors: Gong, Hanyang, Polojärvi, Arttu, Tuhkuri, Jukka
Other Authors: Solid Mechanics, Department of Mechanical Engineering, Aalto-yliopisto, Aalto University
Format: Other/Unknown Material
Language:English
Published: 2018
Subjects:
Arctic
Online Access:https://aaltodoc.aalto.fi/handle/123456789/43075
https://doi.org/10.1115/OMAE2018-78765
Description
Summary:In this paper, we use 3D discrete element method (DEM) to simulate ship penetration through a non-cohesive rubble pile presenting a ridge keel. We study the effect of the pile width on the rubble resistance and the relation between the resistance records and rubble deformation. The peak rubble resistance increases with the rubble pile width, but the rate of the increase is not constant. The peak rubble resistance values from the simulations with the widest rubble piles are compared to the ones yielded by the analytical models with success. Peer reviewed

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