方型船首 的英文怎麼說
中文拼音 [fāngxíngchuánshǒu]
方型船首
英文
transom bow-
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。Chapter two ascertains main technological factor of dong gou lock reconstructing, including forecast the cargo and volume through the lock to reason about representative type of vessel designed for through the lock and its operation organize. chapter three design the renovate engineering through ascertaining the main technological factor scale of the lock, dimension, designed water level and altitude, including design of structure of the lock, lock chamber and lock gate, and select the main technological factor and pattern of headstock gear. chapter four draws a comprehensive compare of the two design scheme of the renovate project with engineering project economy evaluation method, and makes out the recommended scheme, and furthermore, to calculate the economic evaluation index of the recommended scheme and makes the economic sensitivity analysis of the scheme and finally demonstrate economic feasibility of the scheme
本論文共分四章:第一章主要介紹了原東溝船閘的地理位置和營運現狀,說明了船閘在航道建設和水資源綜合利用中的作用及東溝船閘改造的必要性;第二章東溝船閘改造的主要技術因素確定其中包括東溝船閘過閘貨種和貨運量發展的預測,並確定東溝船閘的設計代表船型及營運組織;第三章東溝船閘改造工程設計本章通過船閘改造工程主要技術參數:船閘規模、尺度、設計水位和高程等的確定,設計了二個船閘改造方案,包括鋼筋混凝土整體塢式閘首結構、閘室和閘門的設計,並選定了啟閉機的主要技術參數和型式;第四章採用了工程項目經濟評估方法對東溝船閘改造工程二個設計方案進行全面綜合比較后,確定了推薦方案。Three - gorges ship lift structure is one of important navigation facilities in the three - gorges projects. as far as its scale for navigation, its lifted weight and height are concerned, the ship lift structure is the greatest one in the world. in this paper taking the ship lift structure as background, the principle of mr adaptive reduced vibration control system is proposed to solve the problem of seismic whipping effect of the top machinery building of ship lift structure
三峽大壩升船機是三峽水利樞紐工程中重要的通航設施之一。就其通航規模、提升重量及高度而言,均屬國內外已建、在建升船機之首位。本文以該大型升船機為工程背景,對升船機頂部廠房地震鞭梢效應問題提出了磁流變智能自適應減震控制的原理、設計方法和效果分析。It offers the idea according to problem faced, considering the good character of the ends, the ajusted cubic b - spline curve is used to fit ship lines. it finds out the control vertexs according to a sequence of given points, and then, through particular formula, each point in the curve could be worked out. it smoothes lines with the method based on small - paramter
針對面臨的問題,提出了自己的思路,在數學計算方法上,由於三次準均勻b樣條曲線良好的端部性質,這里用它來擬合船舶型線,首先根據所給的初步型值求出其控制頂點,然後根據相關公式進行插值便能得到曲線上的所有插值點。As a result, the studying aim of this paper is to establish a practical and complete system for the prediction of ship maneuvering motion, taking into account of the influence of the environmental factors, such as the wind, wave and current, establish a practical and complete system for the prediction of ship maneuvering motion. in this paper, the opengl virtual reality simulation technique is introduced into the field of ship maneuver and control, and using the mmg mathematical model, the three dimensional dynamic simulation system of the ship motion is established and good results are achieved. in the process of the system development, firstly, the maneuvering motion equations for ship in the still water are established, based on the mmg module mathematical model and serial experimental result
在系統開發過程中,首先採用mmg分離式數學模型及相關的系列化試驗結果,建立單槳單舵海洋運輸船舶在靜水中的船舶操縱運動方程,並編制計算程序,經與試驗結果比較,證實了計算結果的正確性;為了解mmg數學模型中模型參數變化對操縱性指數的影響程度,作者在上述已有程序基礎上,對有關模型參數進行偏移修正,探討了相應參數變化后的操縱性指數,對船舶操縱性指數對模型參數的靈敏度進行了詳細的分析與探討,所得結論與工程實際相吻合,具有實際應用價值,並為進一步提高船舶操縱性預報的精度打下了基礎;然後,在已有的船舶靜水操縱運動模型基礎上,考慮雙槳雙舵的影響,建立了內河雙槳雙舵船舶的操縱運動模型;最後,綜合考慮風浪流作用力的影響,進行了船舶的操縱運動模擬計算。At first, the recent development of the simulation to cargo system of chemical ship is introduced. the significant of the research, methods and the characteristics of system simulation are also discussed. the model of cargo liquid and ballasting pipeline network is then simulated by the methods of predecessors
文章首先介紹了散裝化學品船液貨系統模擬發展的現狀,闡述了化學品船液貨系統模擬研究的意義,以及模擬的方法和特點;之後運用前人的管網有限元方法對母型船液貨、壓載管網進行模擬建模,在系統地考慮了多種因素的前提下,實現了化學品船液貨系統操作動態模擬和靜態模擬。There are many sorts of the modern dredgers, to adapt the various working regions, and soil conditions etc. it is inevitable to select to build the large self - propelled trailing suction hopper dredgers for shanghai channel bureau, because of the developments of the big - scale ports and channels at home and abroad, and the bad working conditions offshore, and the business direction
現代挖泥船有各種類型,它們適用於不同的施工區域與土質等工況條件。世界與國內港口航道的發展愈來愈體現出規模大,向外海推進和施工條件惡劣的特徵,從上海航道局的企業經營定位出發,建造大型自航耙吸挖泥船是首選方案。As a simulation workstation of marine engine - room simulator, the steam system is mainly utilized to accomplish the process simulation of marine boiler and equipments involved. the accurate models of boiler drum water system and steam pressure controlled system were established in accord with the theory of marine boiler
論文首先根據船舶鍋爐的工作原理,通過機理建模的方法,得到鍋爐汽包水位和汽壓調節對象的模型,並通過一定的假設和簡化,得到汽包水位和壓力在具體擾動下的數學模型。This vessel is a steel box - type working ship with single continuous deck, deck bottom being transverse framing, sheer being transverse framing, and tapered bow stern
本船為鋼質單連續甲板,甲板和底部為縱骨架式,舷部為橫骨架式的首尾端削斜的方箱型工程船舶船型。This vessel is a steel shallow draft flushing dredger of all - welded construction, with single deck, single bottom, transverse framing, transom stern and continuous superstructure, and sledge - shape bow. it is operating on the huanghe river for flushing and suctioning silt and sand with the purpose of controlling the huanghe river tongguan section, dredging the waterway and reducing the flooding. main engine : nt855 - m270
本船為鋼質全焊接結構淺吃水內河自航沖砂清淤工作船,具單甲板其中艉舵機艙首甲板為升高甲板,單底,橫骨架式結構,方艉及連續上層建築首部採用雪橇式線型。Firstly, this issue analyzed the external environment of the coal transport in qin port, explained the ability of the " three west " coal rails passageway, the trains near the port, and the turnoff of the surrounding ports, then emphasized on the computation and analysis of the rails which connect qin port with the places of coal origin. secondly, it analyzed the rails and surrounding ports developing trend, coal demands, the tendency of large - size of ship, and the port adaptability. finally, based on those analysises, i put forward a plan of the construction of specialized deep - water coal berth for foreign trade coal in the coal fourth phrase of qin huangdao port
本文首先,從分析秦皇島港煤炭運輸的外部環境入手,通過對「三西」煤炭鐵路運輸通路、港口所在地區的鐵路以及周邊港口概況的敘述,著重對秦皇島港鐵路(主要線路:大秦線、京山線、京秦線)的運輸通過能力進行了計算與分析;其次,對鐵路及周邊港口發展趨勢、煤炭市場需求、船舶大型化趨勢和港口適應性進行了分析;最後,在以上諸多分析的基礎上,提出建設深水外貿煤炭專用碼頭的可行性方案,從而改善秦皇島港大型船舶的裝卸條件,形成在外貿煤炭船舶裝卸的比較優勢,提高秦皇島港在外煤運輸市場的競爭力,並對方案未來的實施效果進行了分析。The fourth chapter firstly introduces cosco container vessels of less than 1000 teu slot capacity before discussing how to deploy the proper types of ships, taking the shanghai - nagoya trade service as an example. also the author analyzes the sensitivity of the ship types argumentations from such 4 aspects as freight rate, fuel price, port charges and loading rate
第四章,首先介紹了中遠集運所屬載箱量在1000teu以下的船舶,並以上海一名古屋航線為例對船型進行了論證,同時還從運價、燃油價格、港口費、載箱率4個方面對船型論證的敏感度進行了分析。During the processing system development, firstly, set forth the methods, importance and two recently formulas of hydrodynamic derivatives. secondly, based on the mmg module the maneuvering motion equations are established for the ship in still and deep water. to compile and run the program, the calculation results compared with the experimental data
本論文首先簡述了獲得水動力導數的方法、重要性和兩種新的估演算法,接著運用mmg分離型船舶運動數學模型,建立了深水、靜水域的船舶操縱運動方程,並編制計算程序,將試驗結果同數值計算結果相比較,獲得較為滿意的結果。In this paper, an approach of the systematic artificial neutral net was introduced into the analysis on the ship - against - bridges probability with a computer programs. based on the basic data of the present 12 typical bridges as the sample, 4 chief influential factors as the input coefficient, such as the bridge span, the water flow rate, the incline angle between water flow direction and the direction normal to bridge axis, and the curve in the course near the bridge area, with the ship - against - bridge probability as the output coefficient, the intelligent judging system of the ship - against - bridges probability reflecting the influence of the above input parameters is obtained after training
本文首次將人工神經網路系統方法引入了船撞橋概率的研究當中,編制了計算程序,成功地以現有12座典型橋梁的基礎數據為樣本,以橋梁跨徑、水流流速、水流方向與橋軸法線的夾角以及橋區航道彎曲度等4個船撞橋主要影響因素為輸入參數,以船撞橋概率為輸出參數,經訓練得到了能較好地反映上述輸入參數影響的船撞橋概率判斷系統。The prediction of propeller - induced hull pressure fluctuation in non - uniform flow is studied by using theoretical calculation and model experiment systematically. an intact method and computer program for the prediction of unsteady cavitating propeller - induced hull pressure fluctuation in non - uniform flow is set up in this paper. the measurement of propeller induced hull pressure fluctuation in depressurized towing tank carried out in this paper is the first time inland
本文從理論計算和模型試驗兩個方面系統地研究了不均勻流場中螺旋槳空泡誘導的船體表面脈動壓力的預報問題,建立了一套完整的預報非定常空泡螺旋槳誘導的船體表面脈動壓力的方法和程序,並在國內首次完成了在減壓拖曳水池中進行空泡螺旋槳誘導的船體表面脈動壓力測試。This ship is a steel harbour oil spill recover vessel with raked stem, transom stern, twin engines, twin propellers, twin rudders and aft - engined propulsion, for collecting the oil spills from tanker within harbour including flashpoint not exceeding 60
本船為鋼質海港溢油回收作業船,首柱前傾方尾雙機雙槳雙舵,尾機型柴油機作動力推進。用於收集海港內油船溢出的成品油含閃點不超過60c 。In this paper the flow field of falling film along the inner of vertical tube is simulated and it ' s the necessary base of the further research that includes characteristics of heat and mass transfer in the absorber under the fluctuant state. in this paper the ocean fisher ' s movement in the ocean is studied and the physical and the mathematical models of fisher are founded, then the expressions of the force caused by the movement are obtained. the expressions are combined with partial different equations of falling film under the static state, thus the mathematical model of the falling film under fluctuant state can be gained
本文首先研究了船舶在海洋中的運動,建立了船舶搖擺運動的簡化物理模型和數學模型,得到了運動附加力的表達式;並在此基礎上將吸收管的運動附加力表達式代入靜止狀態下液膜流動的數學模型中,即得到了搖擺狀態下液膜流動的數學模型;然後對液膜流動的數學模型進行了簡化,在假定了速度分佈的條件下,得出了液膜流動的積分方程,經過以上簡化就將求解三維問題轉化成為求解二維問題;將積分方程離散化後用數值計算的方法模擬了整個流場。In this paper the flow field of falling film along the inner of vertical tube is simulated and it ' s the necessary base of the further research that includes characteristics of heat and mass transfer in the absorber under the fluctuant state. in this paper the ocean fisher ' s movement in the ocean is studied and the physical and the mathematical models of fisher are founded, then the expressions of the force by the movement are obtained. the expressions are combined with partial different equations of falling film under the static state, thus the mathematical model of the falling film under fluctuant state can be gained
本文首先研究了船舶在海洋中的運動,建立了船舶搖擺運動的簡化物理模型和數學模型,得到了運動附加力的表達式;並在此基礎上將吸收管的運動附加力表達式代入靜止狀態下液膜流動的數學模型中,即得到了搖擺狀態下液膜流動的數學模型;然後對液膜流動的數學模型進行了簡化,在假定了速度分佈的條件下,得出了液膜流動的積分方程,經過以上簡化就將求解三維問題轉化成為求解二維問題;將積分方程離散後用數值計算的方法模擬了整個流場。First, according to the demand of vimp for resin system, the reaction kinetics and rheological of up resin are investigated and the optimal content of low additive profile ( lpa ) is determined. then vimp based on a high - permeable medium and grooves are studied by visual experiments, through which the appropriate high - permeable mediums are selected and the parameters of width, depth and spacing for flow grooves and spacing for supply grooves are optimized. furthermore, various factors affecting the mold filling process are discussed and the whole vacuum infusion procedures are described taking examples of the manufacture of a model boat and a sandwich panel in one infusion
文中首先根據vimp對樹脂體系的要求,對vimp用不飽和聚酯樹脂體系的動力學和流變學性能進行了研究,確定了最佳低收縮添加劑的含量;對高滲透介質型和溝槽型vimp開展了實驗研究,通過可視化實驗優選出較好的高滲透介質,確定了引流槽的寬度、深度和槽間距及主槽的槽間距等工藝參數並進行了優化;對影響充模過程的各種因素進行了詳細的討論,並以模型船和夾芯面板的製作為實例描述了兩種vimp的成型過程;在實驗的基礎上,建立了二維滲漏模型,採用控制體有限元法對高滲透介質型vimp進行了成型過程的計算機模擬計算,通過充模時間和流動前峰的計算值與實驗結果的比較,驗證本文所採用的數學模型和數值方法的正確性,其結果對實際生產具有一定的理論指導意義。Based on the above background, at first, thesis analyzes the characteristics and risk in ship investment. secondly, it presents two kinds of utility function about risk - averse decision - makers. combining with bayes method, author set up ship investment risk evaluation model
基於以上背景,本文首先分析了船舶投資的特點及投資項目所面臨的四類風險,結合效用理論給出兩種風險厭惡型投資者的效用函數,運用貝葉斯分析方法建立一種新的船舶投資風險模型。分享友人