發(fā)布時(shí)間：2018-01-04 18:16

  本文關(guān)鍵詞：破冰船在海冰作用下的運(yùn)動響應(yīng)分析　出處：《天津大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 海冰 破冰船 冰載荷 運(yùn)動響應(yīng)

【摘要】：每年冬季渤海海冰的出現(xiàn)，對海洋工程設(shè)施的正常工作形成了較大的威脅。冰區(qū)作業(yè)的海洋平臺的人員輸送、物資供給等相關(guān)生產(chǎn)活動只有破冰船才能完成，可見隨著冰區(qū)海洋作業(yè)的日益蓬勃發(fā)展，現(xiàn)代破冰船所肩負(fù)的任務(wù)已經(jīng)越來越廣泛和重要。本文進(jìn)行了破冰船破冰過程的機(jī)理分析、破冰過程中冰力的計(jì)算以及冰力引起船的運(yùn)動響應(yīng)分析等方面的研究工作： (1)通過MOSES軟件建立了多用途破冰工作船的數(shù)值模型。 (2)分析破冰船破冰過程的機(jī)理，建立起破冰船正向與冰排作用過程中的復(fù)合式冰排斷裂模式，，指出船艏冰排徑向裂紋的擴(kuò)展這一關(guān)鍵影響因子。考慮到倒錐體前冰排的破壞現(xiàn)象與船艏前冰排破壞現(xiàn)象的相似性，以實(shí)驗(yàn)數(shù)據(jù)為基礎(chǔ)，推衍出作用破冰船船艏的冰力函數(shù)。 (3)對破冰船在航行過程以及系泊狀態(tài)下與海冰作用的過程進(jìn)行了模擬計(jì)算，重點(diǎn)考察了破冰船逆流與順流航行狀態(tài)下的運(yùn)動響應(yīng)差別，發(fā)現(xiàn)隨著相對冰速的變化，這種運(yùn)動響應(yīng)的差別是規(guī)律性變化的。然后分析了系泊狀態(tài)下的最大系纜力，并計(jì)算了載荷放大系數(shù)。
[Abstract]:The occurrence of sea ice in the Bohai Sea in winter is a great threat to the normal operation of marine engineering facilities . Only ice - breaking vessels can be completed by personnel transportation , material supply and other related production activities of offshore platforms operating in the ice area . As the marine operation in the ice area is booming , the task of modern icebreaker has become more and more extensive and important . This paper studies the mechanism analysis of the ice breaking process , the calculation of ice force during the ice breaking process , and the research work on the movement response analysis of the ship caused by ice force : ( 1 ) Based on MOSES software , a numerical model of multi - purpose ice - breaking working ship is established . ( 2 ) To analyze the mechanism of ice breaking process of icebreaker , establish the composite ice bank break model in the process of forward and ice discharge of icebreaker , and point out the key factor of the expansion of the radial crack in the bow ice bank . Considering the similarity between the damage of the front ice bank and the damage of the front ice bank of the ship , the ice force function of the bow of the icebreaker is deduced based on the experimental data . ( 3 ) The process of ice - breaking ship in the course of navigation and under the condition of mooring and sea ice is simulated . The difference of the movement response of the icebreaker under the condition of reverse flow and forward flow is studied . It is found that with the change of relative ice speed , the difference of the motion response is regular . Then the maximum mooring force in the mooring state is analyzed , and the load amplification factor is calculated .

【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U674.21

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