Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2025: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2024: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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Outline of Research at the Start |
We propose two structural reinforcements to reduce the axial tension of the vertical steel pipe that shall be used to produce manganese nodules in a water depth below 4,000m. However, it is unclear if such tension reduction could result in Mathieu's Instability. Thus, we will conduct experiments using reduced-scale models and simulations using Finite Element Analysis to verify the occurrence of this instability.
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