| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
In order to confirm the fluidization behavior of granular cargo containing moisture under rolling motion of hull, it was confirmed fluidized by performing the experiment using a tank containing sand containing water. Next, in order to simulate the fluidization of granular cargo, the analysis method which considered influence of a hydraulic change by movement of water of a gap was formulated. And the distinct element method (DEM) program which was being made so far was improved.It was performed to calculate the liquefaction using DEM that combines pore water and particles. Result of the calculation, it was possible to capture the change of the excess pore water pressure caused by rolling motion.To quantitatively capture the liquefaction, it has left the issue to such as setting parameters. But, in order to clarify the effect of rolling motion of hull to be related to the liquefaction of granular cargo, DEM was found to be an effective technique.
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