大阪大学 · 工学
Maki教授の研究室では、海洋船舶の転覆現象に着目し、非線形動力学の観点から船体のロール運動の安定性と崩壊メカニズムを解明しています。特に、波浪中のパラメトリックロールや不規則波での不安定化現象の理論的・数値的解析を進め、国際海事機関（IMO）の基準に裏付けられた安全性の向上に貢献しています。近年は、ノイズを伴うパラメトリック励振の安定性解析にも展開しており、実海洋環境に即した高精度な評価手法の構築を目指しています。
Figures are computed from collected data and may differ slightly.
Capsizing is one of the worst scenarios in oceangoing vessels. It could lead to a high number of fatalities. A considerable number of studies have been conducted until the 1980s, and one of the discoveries is the weather criterion established by the International Maritime Organization (IMO). In the past, one of the biggest difficulties in revealing the behavior of ship-roll motion was the nonlinearity of the governing equation. On the other hand, after the mid-1980s, the complexity of the capsiz
Abstract Numerous accidents caused by parametric rolling have been reported on container ships and pure car carriers (PCCs). Considering this dangerous phenomenon, the parametric rolling in irregular seas is examined in this paper based on the stability of the systems origin, which corresponds to the upright condition of the vessel. It provides a novel theoretical explanation of the instability mechanism for two cases: white-noise parametric excitation and colored-noise parametric excitation. Mo
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