Numerical study of ore pressure considering coupling effect of hull deformation

Takao Yoshikawa, Masahiro Maeda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

As for the static ore pressure, it can be evaluated with adequate accuracy by the explicit formula by classification rule. But as for the dynamic ore pressure, the exact calculation procedure has not been proposed yet. The purpose of this study is to clarify the static and dynamic ore pressure by utilizing the distinct element method (DEM) that can track the behavior of individual ore particles. We developed the calculation program considering the coupling effect of ore particle motion and the ship structure deformation utilizing DEM and FEM. At first, the accuracy of calculation results by DEM was confirmed by comparing with the ore pressure obtained by CSR in static condition. Next, the dynamic ore pressure, which was not able to catch up by the previous theoretical formula, was calculated by the coupling analysis of ore particles and hull structure for typical Panamax Bulk Carrier. In order to evaluate the ore pressure exactly, it is necessary to consider the typical behavior of ore particle, such as bridging of particles in the vicinity of hull corner and tightening and condensing of particles under cyclic ship motion. And the deformation of hull structure by the ore pressure must be taken into account to examine the ore pressure.

Original languageEnglish
Title of host publicationProceedings of the 21st (2011) International Offshore and Polar Engineering Conference, ISOPE-2011
Pages795-802
Number of pages8
Publication statusPublished - Sep 19 2011
Event21st International Offshore and Polar Engineering Conference, ISOPE-2011 - Maui, HI, United States
Duration: Jun 19 2011Jun 24 2011

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Other

Other21st International Offshore and Polar Engineering Conference, ISOPE-2011
CountryUnited States
CityMaui, HI
Period6/19/116/24/11

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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