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3D DEM Study on the Effect of Ridge Keel Width on Rubble Resistance on Ships

[+] Author Affiliations
Hanyang Gong, Arttu Polojärvi, Jukka Tuhkuri

Aalto University, Espoo, Finland

Paper No. OMAE2018-78765, pp. V008T07A021; 6 pages
doi:10.1115/OMAE2018-78765
From:
  • ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology
  • Madrid, Spain, June 17–22, 2018
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5129-6
  • Copyright © 2018 by ASME

abstract

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.

Copyright © 2018 by ASME

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