hull model 中文意思是什麼
hull model
解釋
船體模型-
With the development of computer technology and free - form surface modeling, body plan description on the computer has been converted into hull surface model simulation in which more information is included so that hydrostatic properties calculation can be carried out with hull information directly
隨著計算機技術與復雜曲面造型技術的發展，計算機上的船體型線的描述，目前已發展成為三維曲面乃至三維曲面實體表達。與線框圖相比，三維圖形中包含的信息更為豐富，實現了計算機上船體模型的模擬。 -
Experimental investigation on vibration reduction of hull model by bubbly layer
艦船結構氣幕減振的模型試驗研究 -
The paper gives a particular analysis on the core module of the option - adjusted model, that is the module of making interest scenes and the module of option characteristic behavior. combining the facts of our country the paper analyzes the applicability of the model. the paper simulates the process of calculating the effective duration and convexity with hull and white ’ s interest term structure and trinomial interest rate tree model
文章著重分析了期權調整利差的兩個核心模塊，即利率情景製造和期權特徵行為模塊以及其中涉及的模型在我國的適用性，並用hull和white的利率期限結構和三叉樹的方法模擬演算了一項具有隱含期權的假設資產的有效持續期和有效凸度的求解過程。 -
The study of these lines led to the bohr atom model and on to our present understanding of the electron hull of the atom as described by the orbital atom model which is the basis of all understanding of chemistry
在對于譜線的研究基礎上，產生了玻爾原子模型，直至現今描述原子中電子殼層結構的原子軌道模型，該模型是今天我們對于化學的所有認識的基礎。 -
To solve the problem of the fear of inadequacy of armor protection on the already heavily armored kv - 1 model 1941, it was decided to bring the armor protection of the turret up to a thickness to 75mm. since the capability of producing such a thick armor plate was lacking at the time, so an interim solution was to use bolt on armor, 25 mm of thickness, bolt directly to the outside of the turret and some other parts of the hull. this type was usually referred to as kv - 1s ehkranami
針對kv - 1 1941年型的裝甲防護能力不足的問題，設計人員進行了一系列強化裝甲的工作，改進后的kv - 1的炮塔裝甲達到了大約75毫米的厚度但在具體製造中由於為kv坦克提供裝甲鋼板的工廠沒有能力生產必要厚度的裝甲鋼板，因此，作為臨時解決方案用螺栓在車體和炮塔上加裝了25毫米厚的附加裝甲，這種改進的kv坦克被命名為kv - 1附加裝甲型。 -
Then, made use of software ansys to calculate the strength of a catamaran ferry structure, applied the formulae deduced in chapter 3, selected reasonable restraint form, in the whole ship computing result further verified the formula then on the base of a model of the whole ship, used fea to study the hull connecting structure with the limit of strength, deduced the useful assumption for after research
並將計算的重要環節連接橋單獨取出，進行專門的簡化模型推導，根據連接橋上與片體相連處節點的受力情況分析應力分佈規律，尋找合理的載荷施加方法，並根據實際情況對模型進行約束，使連接橋單獨計算的結果與全船計算相吻合，從而達到模擬全船的簡便計算的目的。 -
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。 -
The element leading to problems could be extremely complicated, for instance, insufficient consideration during the model setup ; certain affecting elements vary with different types of ship, like the ship hull deformation, shaft vibration and reinforcing hardness and so on ; inadequate accuracy control and errors during the construction
導致問題的因素相當復雜，有計算模型的建立過程考慮因素不周；也有一些影響因素的特定性，對于不同的船型而不同，如船體變形，軸系振動，支座剛度等；還有施工過程精度控制不夠或施工過程出現錯誤。 -
In this paper, i will present some algorithms of polyhedral visual hull reconstruction : ( 1 ) polyhedral v isual h ull generation a igorithm b ased one dge - pool - searching, which constrains the 3 - d intersections into the 2 - d planes intersection via the epipolar theory to reduce the complexity a nd c an r educe t he t imes f or c ones t o b e p rejected o nto t he i mage p lanes, i n which we induced the index list to every points on the surface of object, and connected the related points to get sub polygons on surface and in turn get the mesh model, we replace triangulation process of disordered points cloud by edge - pool searching. ; ( 2 ) reconstruction based on degenerated - polygon - intersection, which have the following improvements on traditional bull intersection : using degenerated polygon to orga nize intersected area on cone face, which may be discontinuous ; a fast intersection algorithm of polygons on the cone face based on degenerated polygons, which is consistent between the continuous polygons and the discontinuous ones. the intersection of degenerated polygons is similar to the convergence of two ordered lists, which is comparably simple to the bull operation ; ( 3 ) reconstruction algorithm based on ray - tracing, in which all the rays that run through the vertex on silhouette of object will intersect with all the cones correspondent to other silhouette, and we have to calculate the intersection of all such line segments, the endpoints of which are considered to lie on the surface of object and we will get the point cloud on the surface of object
同時利用共極線原理把三維計算投影到二維平面以降低求交計算的復雜度，該演算法可以減少光錐向圖像平面投影計算的次數，以邊池搜索取代散亂點集上進行的三角剖分； （ 2 ）基於退化多邊形求交的多面體可見殼模型重構，系統引入退化多邊形的概念，把錐體平面的交集中不連通的部分用一個退化多邊形來表示，並引入了新的基於退化多邊形的求交演算法，與傳統多面體可見殼重構相比，該演算法有以下幾點創新：在圖像平面以退化多邊形組織投影錐體和物體輪廓的交集，把任意錐面與物體輪廓的交集歸一到一個退化多邊形；基於退化多邊形的二維平面上多邊形快速相交演算法，該演算法在一定程度上就是兩個有序鏈表的合併，大大簡化了先前的布爾求交計算； （ 3 ）基於光線跟蹤的演算法，該演算法中所有通過輪廓頂點的光線和對應其它圖像輪廓的光錐進行求交計算，最後得到每次求交計算得到線段的交集，該線段的頂點就認為是物體表面點，從而得到物體表面的點雲。 -
In this thesis, non - uniform rational b - spline, i. e., named nurbs, is used to model ship - hull surface. interpolating, fairing and representing ship - hull surfaces are the most important parts of researching task
所以，用nurbs技術作為數學工具，對船體曲面進行表達、插值和光順處理是本文的主要研究內容之一。 -
The advantages, such as easily computing form - lines and accurately lofting, are offered by mathematical ship - hull surface. hull structure modeling, engineering analyzing and manufacturing are based on mathematical ship - hull surface. furthermore, hull structure designing in virtual reality environment and intelligent building depend heavily on the ship - hull surface model
船體曲面的數學描述有著很大的優越性，如放樣精確，求值（型線、肋骨線、結構線、接縫線等）方便，也是後面船體結構設計，工程分析，建造的依據，是實現智能設計、虛擬建造的先決條件。
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