波浪中船舶諧搖問題的研究

[摘要] 隨著航海事業(yè)的發(fā)展，船舶在大風浪中的安全問題已經(jīng)成為大家關注的重點。但由于大風浪中船舶作業(yè)的特點，船舶事故還是時有發(fā)生，并對人身安全和國家財產(chǎn)造成了巨大的威脅?？疾爝@些事故的原因，其中大部分是由于駕駛員對風浪中船舶操縱的特點不了解造成的。為了避免這些風險，本文試圖從風浪中船舶諧搖的角度上做一定的探索。本文首先對波浪中船舶諧搖運動的原理及諧搖運動的危害進行了介紹；其次用假設法建立了大風浪中船舶諧搖的數(shù)學模型；然后結合海浪情況和某船實際數(shù)據(jù)，運用數(shù)據(jù)統(tǒng)計的方法構建了船舶諧搖區(qū)模型圖，通過對得出模型圖的進行進一步的分析，得出了適用同類型的船舶的一般結論，并據(jù)此提出了預防船舶橫搖諧搖的措施；最后本文還從縱搖諧搖的角度探究了海上允許速度的問題。
  
[關鍵詞]  風浪中航行  數(shù)據(jù)分析  諧搖區(qū)模型圖  海上允許航速  
The research on ship's synchronous rolling in rough sea

【Abstract】: With the development of navigation, ship's safety problem in rough sea has become the important thing which pepole are facoused on. Due to the complexity and viriation of marine  conditions accidents of this kind sometimes occurs, which has posed the huge theat to the personal safety and the state property. Inspecting these accidents, a lot of these accidents are started by navigators not knowing the ship's maneuver rule in big waves. To avoid this risk, this article attempted to make the further exploration from the angel of ship's synchronous rolling movement in rough sea. First this article introduced the theory and hazard of the ship's synchronous rolling movement, besides, through tentative method, establishes the mathematic model of ship's synchronous rolling movement. Then combine with the wave's characteristic and one ship' data using data statistical and analyse methods to establish one ship's synchronous rolling picture model, through analysis of the picture model, we get the general conclusions that could application in ship with the same characteristics. Base on the picture model, we get the method which prevention ship's synchronous rolling.  At last, this article also explores the ship's permit speed at sea from the angle of synchronous pitching.

【Key words】:  navigation in big wave.  data analyse  synchronous rolling picture  permit speed at sea
 
目  錄

引  言 1
第一章 諧搖產(chǎn)生的基礎理論 2
1.1 諧搖產(chǎn)生的原理 2
1.2橫搖諧搖產(chǎn)生的條件 2
1.2.1最大波面角與船舶諧搖時的橫搖擺幅 3
1.2.2船舶橫搖諧搖發(fā)生的條件 3
1.3諧搖的危害 5
第二章 實船橫搖諧搖的分析 6
2．1橫搖諧搖運動的方程 6
2.1.1諧搖與船舶固有橫搖周期 6
2.1.2 橫搖諧搖與波浪遭遇周期 6
2.1.3 橫搖諧搖運動方程的建立 7
2．2計算實例與分析 8
2.2.1實船資料 8
2.2.2實船數(shù)據(jù)統(tǒng)計 8
2.2.3定性分析 11
2．3船舶在風浪中減小諧搖的措施 12
第三章 縱搖諧搖與海上安全航速 13
3．1縱搖諧搖產(chǎn)生的條件 13
3．2縱搖諧搖運動的分析 14
3.2.1縱搖公式的推導 14
3.2.2實船數(shù)據(jù)統(tǒng)計 14
3.2.3定性分析 15
3.2.4海上危險航速的計算 16
結論 17
致謝語 18
參考文獻 19