方格坐標 的英文怎麼說
中文拼音 [fānggézuòbiāo]
方格坐標
英文
grid coordinate-
The paper gave some methods for calculating the area of anomalistic area on plane, and then deduced the methods for calculating coordinates points and counting grids, and finally the paper gave another method of counting pixels
介紹幾種求取平面不規則區域面積的方法,再推演出專用於計算海域面積的坐標法和方格法,並給出一種適合計算機計算的數點法。Perfect pre - processing and post - processing function is one of the main factors to evaluate the vitality and market value of the finite element analysis system surveying today development of finite element analysis technology, most of which concentrate on establishing fine user interface, also has some limitation on application, and especially, the research on the visualization of arbitrary cut - plane is always in ascendants to realize the visual processing on cut - plane needs reprocessing the results of finite element analysis which have get, so the algorithm is two parts : seeking the physical value of cut - plane and drawing 2d contours, the former, based on the theory of stress on " arbitrary inclined plane " in physical mechanics, use the method of linear interpolation method to get the coordination and physical value of intersection between cut - plane and element arris ; the latter, based on the tables on elements, nodes, stress and strain, summarize a rapid algorithm of generating 2d contours based on the grid. this thesis synthesizes there two parts and get a visual processing program under fortran
縱觀有限元分析技術的發展,目前大多集中在建立良好的用戶界面上的研究仍存在許多應用上的局限性,其中對任意剖面上可視化的研究仍處于方興未艾的階段。要實現任意剖面上可視化處理,必須先將得到的有限元計算結果進行再處理,因此在演算法上分為兩部分:求任意剖面上物理量值的演算法及二維等值線演算法。前一部分以彈性力學中「任意斜截面的應力」為理論基礎,利用線性插值方法得到截面與單元棱邊的交點坐標及交點物理量值;在此基礎上;根據已得到的單元及節點序號表、應力應變物理量表,總結出一種基於有限元剖分網格的快速生成二維等值線的演算法。The main research work in the thesis is as follows : ( 1 ) base on the analysis of cutting principle and tooth geometry characteristics of klingelnberg cycloid bevel gear, the formula of tooth design calculation was verified and the equation of imaginary crown gear tooth flank was deduced by establishing appropriate coordinate system
主要研究工作和成果有: ( 1 )通過分析克林貝格擺線錐齒輪銑齒原理,對其部分幾何設計演算法進行了推導驗證,並建立了適當的坐標系推導了假想冠輪的齒面方程。Analyse the tooth geometry of klingelnberg cyclo - palloid spiral bevel gear., according to the relative position and kinematic relation of the cutter heads, virtual crown gear and the processed wheel blank, established the system of coordinates of the gear cutting, dedcuced the tooth face equation of the virtual crown gear, according to relations of the gear cutting and space theory of engagement, deduced the tooth face equation of klingelnberg cyclo - palloid spiral bevel gear, and drawing the three - dimensional graphs of the virutal crown gear and klingelnberg cyclo - palloid spiral bevel gear according to the design and setting parameters
對克林貝格擺線齒錐齒輪進行齒面幾何分析。根據銑齒加工中刀盤、搖臺和輪坯的相對位置和相對運動關系建立了切齒嚙合坐標系,由矢量的旋轉推導了產形輪齒面方程;根據空間嚙合原理和切齒嚙合關系推導了被加工齒輪的齒面方程;由設計參數和銑齒調整參數計算得到齒面離散數據,繪制了產形輪和擺線齒錐齒輪的三維齒形。The integral equations governing the three - dimensional viscous flow inside the turbo - machinery in the rotating coordinate system are presented in this paper, the viscous effects are simulated by the distributed body force described by professor denton j. d. the time - marching method and explicit finite volume difference scheme are employed to solve the flow inside the turbo - machinery
本文給出了相對旋轉坐標系下葉輪機械內部三維粘性流動的守恆型積分型方程組,利用dentonj . d .教授的粘性體積力法來模擬粘性對葉輪機械內部流動的影響,採用時間推進法和有限體積差分格式對葉輪機械內部的流動進行求解。Firstly, this paper designs a polar coordinate barotropic vorticity equation semi - spectral model and a quasi - geostrophic grid model in order to research the propagation of vortex rossby waves and tropical cyclone intensity change entirely
本文首先設計了一個極坐標系正壓渦度方程的半譜模式、一個準地轉格點模式對渦旋rossby波傳播和熱帶氣旋強度變化進行了較為系統的研究。This paper applies kami ' s method to analyze conservative scheme in lagrangian coordinate, and then selects one of upwind schemes which do not show oscillations, finally applies it to construct high resolution scheme. numerical flux of one order scheme is used near interface, while numerical flux of high resolution scheme is adopted in other area
本文在對lagrange坐標系下的守恆型格式進行詳細分析后,甄選出不震蕩的一階迎風型格式,然後應用於lagrange坐標系下的高解析度格式,在物質交界面處採用不震蕩的一階迎風型格式的數值通量,而在其餘地方採用高解析度格式的數值通量。For the regular curves, we find two killing fields for the purpose of integrating the structural equations of the p - elastic curves and express the p - elastica by quadratures in a system of cylindrical coordinates. for the star - like affine curves, we solve the euler - lagrange equation by quadratures and reduced the higher order structure equation to a first order linear system by using killing field and the classification of linear lie algebra sl ( 2, r ), sl ( 3, r ) and sl ( 4, r ). we solve the centroaffine p - elastica completely by quadratures
對于正則曲線的情形,我們發現了兩個用於求解p -彈性曲線的結構方程的killing向量場並用積分將p -彈性曲線在一個柱面坐標系中表示出來,而對仿射星形曲線的情形,我們用積分方法解出了歐拉-拉格朗日方程,利用killing向量場及線性李代數s1 ( 2 , r ) 、 s1 ( 3 , r )和s1 ( 4 , r )的分類將高階結構方程降為一階線性方程,因此我們用積分完全解出了中心仿射p -彈性曲線。A normal transform is introduced, and there are enough much grids in the region between the critical layer and the wall, where the variation of the disturbance is the quickest. the finite - difference of governing equations with fourth - order accuracy in the normal direction is utilized in full regions including points close the wall, and is very important for accurately discreting equations. the combination of global and local methods is implemented, and a new iterative formula is derived
對于曲線坐標系下的拋物化穩定性方程,文中發展了求解的高效數值方法:引進法向變換,使得在臨界層與壁面之間的擾動量變化最快的區域有更多的法向網格點;導出包含邊界鄰域在內的完全四階精度的法向有限差分格式,這對方程精確離散至關重要;採用全局法和局部法相結合的方法及其新的迭代公式,大大加速收斂並得到更精確的特徵值。The clearness and solidification of bushism concept, system and practical operation, have provided the writer with the evidence and stable coordinate as follows : to reveal the essiential content of bushism from the us multicultural and multipolitical angel and through this crack to dissect directionally the trend and reasons of bush government al asia - pacific strategy, then further to find out the way of decomposition and combination of the political powers in asia - pacific region, accordingly re - structure the new system of the security pattern in asia - pacific region
「小布希主義」的理念、體系和實踐運作的明朗化和凝固化,為作者如下研究工作提供了必要的證據和穩定的坐標,即從美國的多元文化和多元政治結構人手揭示「小布希主義」的內在本質,並以此為切口對其亞太戰略動向和原因進行定向解剖,進而探囊取物,以國家和跨國家集團為單位尋找亞太地區政治力量的分解組合方式並由此重構亞太地區安全格局的新體制。It supposed that the circle of sliding surface run through the foot of slide. the factor of safety is transmitted to the function of x coordinate of the intersection point of the tangent at the scrap of the circle and x axis. so, the two - dimension area of searching is changed to one - dimension
該方法先固定潛在滑動圓弧的上、下邊界點,利用滑弧后緣處的切線與x坐標軸交點的位置確定了滑弧的曲率,將二維搜索麵域簡化為一維搜索線域,搜索的上、下限有嚴格的界定,不存在漏點問題。Li sheng and roberts studied 2 - role assignments on triangulated graphs. they puts the open questions : whether a given graph is k - role assignable for the case k 3 ? we study g _ n ~ ( d, s ) graph and the grid graph and the honeycomb rectanglar torus and honeycomb rhombic torus accordingly
本文對格圖和環面蜂巢圖以及g _ n ~ ( d , s )圖作了相應的研究,其中用到了一種坐標化圖的方法。When analyzing skew support continuous curved box girder bridge, curved grid girder analyzing method considering warping effect is applied. matrix displacement method is applied in analyzing skew support continuous curved thin - walled box girder bridge with restrained bearing. in order to convert original rigidity equations to structural rigidi ty equations that can be solved, bearing nodal displacement matrix can be introduced, then unknown quantities at the edge of beams can be consistent with the restrained directions of skew bearings, unit rigidity matrix and unit nodal forces can be gained. structural rigidity matrix can be composed according to matrix displacement method, so nodal displacements and inner forces on the end of the rod that are unknown can be gained calculating equations of inner forces on any cross - section can be solved
分析斜支承連續曲線箱梁橋時,採用考慮翹曲作用的曲線格子梁分析方法,應用矩陣位移法對具有約束支承形式的斜支承連續曲線薄壁箱梁橋進行分析,考慮到支座的約束條件並不與梁端彎曲角位移和扭轉角位移的方向一致,引入支座節點坐標矩陣,使得梁端的位移未知量與斜支座約束方向一致,來計算單元剛度矩陣和單元節點力,然後按照矩陣位移法組集總剛並建立結構剛度方程,根據結構剛度方程即可求解未知的節點位移及桿端力,推導出任意截面處的內力計算公式。Based on the previous work, the equations of motion and elastodynamics are changed. a high - order staggered velocity - stress finite - difference formula of the acoustic field in borehole are set up in cylindrical coordinate, and the corresponding code is accomplished
本文在彈性波動力學的基礎上,將運動方程和本構方程作適當變形,採用交錯網格技術建立了井孔波動方程在柱坐標系下的速度?應力高階有限籌分公式,並編制了相關計算程序。We put forward the best coordinate - based method to extract the form structure. the horizontal and vertical lines and text lines are applied as locating mark, and location coordinates is created according to these marks. the full document image is divided into several areas, so the aberration is removed because of each area is very small
本文提出了基於最佳坐標系的表格結構提取方法,利用分佈在表格中的水平和垂直線條作為定位標記,用這些定位標記組成多個定位坐標系,可將一幅表格劃分為多個小區域,每個坐標系定位其附近的一個小區域。Based on the research of the blueprint, this paper introduces a new method to do the compress of the data. this new arithmetic is based on the description characters, using coordinate to memorize the information of the whole blueprint
對線型圖形來講,最合理的壓縮方式是基於描述字格式,僅用較小的信息量,分別記錄圖紙上的元器件信息,用坐標位置來描述元器件符號之間以及和導線的拓撲關系,從而完成對整幅圖紙信息的壓縮存儲。In this paper, by use of the idea of constructing of high accurate eno ( essentially non - oscillatory ) schemes applied successfully in the simulation of euler equations, a new kind of high accurate finite volume schemes have been constructed in lagrangian coordination. combining with the eno interpolation, two kinds of conservative remapping algorithms have been developed for arbitrary mesh systems
本文採用已經在euler方程求解中得到成功運用的高精度eno ( essentiallynon - oscillatory )有限體積格式的構造思想,構造了lagrange坐標系下高精度有限體積格式,結合eno插值自適應選取插值點的特性,提出了兩類適用於任意網格的守恆重映方法。The contact freeform surface meaurement system the authors are developing is introduced in this paper, it is the application of cmm in the reverse engineering of part. the components of its software and hardware are analyed. under the circumstances of cad modelis unknown, somecirtical problems are studied such as the measurement points adaptive localization, the measurement path, layout and measurement data disoposal etc. based on measuring the curved surface of the cam, the scaning software have be designed in measuring the curved surface in cmm. the cmm ' s data can transfer to cad / cam system
分析了其軟硬體的組成,並對在cad模型未知的情況下,測量系統軟體中的一些關鍵技術,如測點的自適應分佈、測量路徑的規劃和測量數據的處理方法等作了研究。並以凸輪輪廓曲線為例,編制了相應的曲線面輪廓掃描軟體,並使三坐標測量機的測量數據轉換為cad cam能接受的圖形信息格式。First, the fundamental theory of the basic fdtd method and its application in the analysis of the electromagnetic properties of infinite planar periodic structures is summarized. the basic ideas of the auxiliary fields fdtd method is expressed and generalized to the situations of the 2 - d periodic structures, to lossy media, and to the curvilinear coordinate. the shortcoming of this method in the management of conformal grids is pointed out
首先總結了fdtd方法的基本理論及其在周期性結構電磁特性分析中的應用,闡述了輔助場fdtd方法的基本思想,把它推廣到二維周期性的情況和計算區域為有耗媒質的情況,再進一步推廣到曲線坐標系中,並指出了該方法在網格共形處理中的不利之處。A discretization equation is derived by using a finite volume method in three - dimensional cylindrical polar coordinate system. algebraic equations are solved by iteration with a line - by - line method that is a combination of tdma in axial and radial directions, ctdma in tangential direction and adi method in three directions. the pressure and velocity coupling are solved with the simple algorithm
在三維圓柱坐標下,利用有限體積法推導離散方程;在軸向與徑向用三對角矩陣法( tdma ) ,在周向採用循環三對角矩陣法( ctdma ) ,採用交替方向亞鬆弛疊代法( adi )求解方程;推導同位網格下的壓力修正方程,用simple演算法處理速度與壓力的耦合;為加速收斂,採用適當的鬆弛因子。分享友人