2021 年度実施状況報告書

Multiphysics modelling and experimental verification of a suspension ship running at head seas

研究課題

研究課題/領域番号	21K14363
研究機関	大阪府立大学
研究代表者	韓佳琳大阪府立大学, 工学(系)研究科(研究院), 助教 (40814877)
研究期間 (年度)	2021-04-01 – 2024-03-31
キーワード	Suspension ship / Multiphysics modelling / Motion reduction / Wave energy harvesting
研究実績の概要	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.
現在までの達成度 (区分)	現在までの達成度 (区分) 2: おおむね順調に進展している理由 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.
今後の研究の推進方策	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.