| Project/Area Number |
21K14363
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 24020:Marine engineering-related
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
韓 佳琳 大阪府立大学, 工学(系)研究科(研究院), 助教 (40814877)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Project Status |
Granted (Fiscal Year 2021)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | Suspension ship / Multiphysics modelling / Motion reduction / Wave energy harvesting / multiphysics modelling / multibody dynamics / suspension ship / ship motion control / skyhook control |
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| Outline of Research at the Start |
Suspension is widely used for ride comfort improvement. In this research, a multibody dynamic simulation model of a suspension ship is developed and verified by towing tank experiment. A deep insight into the interaction mechanism and characteristics of suspension ships is expected to be provided.
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| Outline of Annual Research Achievements |
Previous experimental studies have explored the features of several suspension ships for ride comfort improvement and wave energy harvesting. This research aims to develop a multiphysics model to provide a deep insight into the interaction of the cabin, the suspension, the hull, the control system, and the incident waves.
A virtual prototype of a suspension ship was built using the multibody dynamic simulation software ADAMS. The mechanical interaction of the cabin, the suspension, and the hull were investigated. Furthermore, the vertical shock and vibration isolation characteristics of the ship were examined with various spring stiffness and damping coefficients to understand their relationship with the acceleration and jerk of the cabin.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
The research is in progress. A mechanical model of the suspension ship has been built. The effects of four vital parameters (mass ratio, spring, damping, and the suspension's mounting location) on the stability of the ship and vibration isolation of the cabin have been studied.
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| Strategy for Future Research Activity |
The next step of the research is to verify and improve the accuracy of the mechanical simulation model by conducting bench tests and making comparisons with the simulation results. Then, a CFD model which simulates the interaction between the incident waves and the hull will be built. Following is the integration of the mechanical model and the CFD model to co-simulate the motion responses of the suspension ship.
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