首部船體 的英文怎麼說
中文拼音 [shǒubùchuántǐ]
首部船體
英文
foreship-
Previous researchers believed the ship broke in just two major pieces, the bow and stern, which was how the sinking was depicted in the 1997 film version of the catastrophe
之前的探險家們認為泰坦尼克號船首和船尾斷裂成兩部分, 1997年反映這場災難的電影泰坦尼克號就是依據這種說法拍攝船體下沉時的情景的。The theoretical calculation and the model experimental result both have confirmed that the built - up stabilizing appendage is able to reduce pitching n heaving motions and especially bow acceleration considerably
理論計算和模型試驗結果均證明了組合減搖附體能夠減小船的縱搖運動、升沉運動,尤其是大幅度降低首部加速度。The calculated drafts covers the whole possible ship draft in the large amplitude motion ; secondly, the research creates and solves the ship large amplitude motion equations. on the one hand, the actual calculation takes into account the coupling between the different motion modes, on the other hand, in the process of calculation of the ship hydrodynamic coefficient, it considers the influence of the nonlinear factor. the hydrodynamic coefficient used in the calculation of froude - krylov force, diffraction force and radiation force changes instantaneously following the draft, and the hydrostatic buoyancy is computed very accurately for the instantaneous immerse hull
本文的研究分為二個部分:首先利用frank源匯法計算水動力系數,計算包括不同吃水時的附加質量和阻尼系數,吃水范圍涵蓋了船舶大幅度運動時所有可能的吃水;然後建立和求解船舶大幅度運動方程,在實際計算時一方面考慮了運動模態之間的耦合,另一方面在計算水動力時,考慮了非線性因素的影響。 froude - krylov力、輻射力、繞射力中的水動力系數隨吃水瞬時變化,靜浮力的計算精確到船體瞬時濕表面積,最後用四階龍格?庫塔方法在時域內求解船舶運動方程,並進行了載荷計算。In the full of research, the thesis constructed the dynamic equations of the simplified model, then programmed and computed the feedback gains using lqr method. moreover, the thesis plotted pictures of displacement, velocity, acceleration, bend and shearing force of ship ' s head and middle part in the condition of using cable and not using cable
在研究工作中,首先對船舶的簡化模型建立了動力學方程,然後採用線性二次型最優控制方法,編寫程序並計算出船體垂向振動固有頻率和最優反饋矩陣,得到控制前後船艏以及船舯部的位移、速度、加速度、彎矩和剪力歷程圖。The forward part of a ship ' s hull ; the bow
船首船體外殼的前面部份;船頭According to different water phenomena, we use two different method to produce waves source : the first method is by specifying the boundary conditions and initialization conditions, this method simulate the dam breaking, reflection and diffraction of water waves ; the second method is by specifying disturbance model, this method simulate water droplets, waterfall, waves of ship ; in the first part of this thesis, we discuss the prevalent methods of the simulation of water scenes, in the second part of this thesis, we describe the numerical methods of solving the shallow water equations using the finite difference method and the finite volume method respectively, in the third part of this thesis, we simulate some realistically liquid phenomena such as rain droplets, the waves of ship, dam breaking etc
產生水波首先要有波源,設置不同的波源便可以得到不同的水流情形,我們用兩種方法來產生波源:一種是通過設置邊界條件和初始條件產生,這種方法用於模擬潰壩波的反射、折射等現象;另一種是通過擾動控制產生,這種方法用於模擬雨滴、瀑布、船波等自然現象。本論文的第一部分我們討論了目前水動畫模擬常用的幾種方法;在第二部分討論了我們所使用的兩類數值方法:有限差分方法和有限體積方法;在第三部分我們模擬了雨滴、船波、潰壩波等一些水流現象。This thesis used along caldwell ' s direct calculation method of the ultimate strength of ship hull girders, considered the double bottom and upperwing tank to ship ultimate strength contribution, first defined the stress distribution of the whole section of the ship girders. that is : in the sagging condition, deck and side shell of nearby deck remain the ultimate bucking strength, double bottom remain the yield stress. and the other parts keep elasticity
本文沿用caldwell等人直接計算船體極限強度的思想,考慮雙層底和頂邊水艙對船體極限強度的貢獻,首先將船體梁整體破壞時剖面應力分佈確定為:在中垂狀態下,甲板及甲板附近的舷側均屈曲,雙層底區域則均屈服,其他部分保持彈性狀態;在中拱狀態下,雙層底及之間的底舷側均屈曲,甲板及頂邊水艙區域均屈服,其他部分則保持彈性狀態。Then it dwells on human - error peculiarities and reasons of a general complicated human - mechanic - environment system. finally, it potentially summarizes reasons for the seamen " mistake in the shipping. these conclusions prepare for a part of information which is important to establish the software database about the ship mechanic casualties
首先,從復雜人機工程學的定義出發,介紹了船舶系統的人、機、環境概況;然後,詳細地剖析了一般復雜人、機、環境系統中人為失誤的特點和原因等;最後,又大概地總結了一下在船舶方面船員失誤的原因等,這些為船舶機損事故數據庫軟體的建立準備了部分資料。In order to prepare things for my going home, i first, the brasil fleet being just going away, resolved to give answers suitable to the just and faithful account of things i had from thence ; and first to the prior of st. augustine i wrote a letter full of thanks for their just dealings, and the offer of the 872 moidores, which was indisposed of, which i desir d might be given 500 to the monastery, and 372 to the poor, as the prior should direct, desiring the good padres prayers for me, and the like
開往巴西的船隊馬上要起航了,所以我決定先寫幾封回信,答復巴西方面寄給我的那些報告。應該說,他們的報告既忠實,又公正,所以,我的回信也應該寫得十分得體。首先,我給聖奧古斯丁修道院院長寫了一封回信,在信中,我對他們公正無私的辦事態度充滿了感激之情,並把那沒有動用的八百七十二塊葡萄牙金幣全部捐獻了出去,其中五百塊金幣捐給修道院,三百七十二塊金幣隨院長意思捐給品民,並請他為我祈禱。分享友人