finite geometry 中文意思是什麼
finite geometry
解釋
有窮幾何-
5 ) the 3 - d geometry and finite element model of the assembly of the optimized obturator of the breech mechanism is set up in terms of the optimized structural parameters. quasi - static and dynamic finite element analysis of stiffness, strength and obturating performance of the optimized obturator of the breech me chanism is performed
利用優化后的結構參數建立了優化后炮閂閉氣結構的裝配體三維幾何實體模型和有限元模型，對優化后的炮閂閉氣結構剛強度和閉氣性能進行了準靜態及動態多體接觸彈塑性有限元分析。 -
Finally, convergent geometry had an important effect on the perturbance coupling between the interfaces of the finite fluid. the attenuation factor of perturbance coupling from the outer interface in was greater than the one from the inner out
本文研究表明：收縮幾何效應對有限厚度流體的界面之間的擾動耦合有重要影響，柱和球幾何中擾動耦合從外界面到內界面的衰減因子大於從內界面到外界面的情況。 -
In this article, physical equations and relative three - dimensional finite - difference formulae in cylindrical and spherical geometries were derived and two - and three - dimensional code in cylindrical and spherical geometries for direct - drive by laser was made, based on the lared - s code in planar geometry. it consisted of the processes such as the inverse bremsstrahlung absorption, electic heat conduction and fluid dynamics
本論文在lared - s程序平面版本基礎上，推導了三維柱和球幾何中激光驅動的物理方程和相應的差分方程，編制了二維和三維柱和球幾何中激光驅動流體不穩定性的lared - s程序版本，主要物理過程包括：激光逆軔致吸收、電子熱傳導和流體運動。 -
The main popular theoretical method adopted to study end - plate connection is finite element technique under monotonic loading at present. this paper applies nonlinear ( material, geometry and contact ) finite element method to analyze the behaviors of connections under cyclic load at fist time. contact elements are set between end plate and column flange, screw cap and neighborhood plane, bolt bar and hole
對于端板連接的理論分析，目前國內外的研究主要局限在單向加載有限元分析范疇，本文首次採用三維非線性（包括材料、幾何與狀態非線性）有限元對端板連接進行了循環加載分析，端板與柱翼緣間、螺栓頭（帽）與相鄰板件間、螺栓桿與孔壁間都設置了反映邊界狀態的接觸單元。 -
Chapter 4 time - dependent computational simulation of the response of cable - suspension feed system in gusty wind based on the time - independent structure finite element method, and with consideration of the movement laws of cabin, a 3 - d time - dependent structure finite element model formulated by a new method named iss method ( instantaneous structure supposition method ) to deal with the vibration response of cable - suspension feed system in gusty wind is presented. in the model, all sources of geometric non - linearity, cable sag and changes of cable geometry due to large displacement, are fully considered
基於時不變結構的有限單元法，在綜合考慮饋源艙運動規律的基礎上，提出了時變系統的瞬時結構假定法，通過將懸索離散為索桿單元，建立了系統的時變有限元模型，該模型充分考慮了懸索的垂度和大變形等幾何非線性因素，應用ne 。 -
A space geometric non - linear static finite element analysis program about the long span plate - truss composite cable - stayed bridges is presented. not only it can be used to solve the space static analysis about the state of the dead load configuration ( geometry and internal forces ), but also it can be used to analyze the internal forces and deformations of the whole construction course
基於以上理論，並結合斜拉橋的施工過程，編制了大跨徑斜拉橋的空間幾何非線性靜力分析程序，既可用於斜拉橋成橋狀態的空間靜力分析，也可結合斜拉橋的具體施工過程，進行施工過程中的內力與變形狀態的跟蹤分析。 -
In three dimensions, the basis of spatial objects is euclidean geometry, it obeys euclidean axioms. this leads directly to the question how geometric constructions, as defined by the euclidean axioms, can be represented with the finite approximations available in computer systems
在三維空間中，空間對象的定義基礎是歐幾里得幾何，服從歐幾里得公理，但利用計算機系統處理嚴格服從歐幾里得公理的空間對象必定會帶來一些問題。 -
The study about geometric properties of finite sets of points in the plane is one of the most famous and fundamental topics in combinatorial geometry
平面點集幾何性質的研究是組合幾何中的一個重要內容。本文討論其中最為著名的erd （ ? ） s問題。 -
Their size parameters, the largest probability of a successful impersonation attack and the largest probability of a successful substitution attack are computed ; chapter three use sympletic geometry to construct authentication codes with arbitration, some parameters and the largest probability of successful attack are also computed ; chapter four is about lattices generated by transitive sets of subalgebras under finite chevalley groups
並計算了相關參數及成功偽造和成功替換的最大概率；第三章在辛幾何的基礎上構造了具有仲裁的認證碼，亦計算了相關參數及各種攻擊成功的最大概率；第四章討論了有限域上chevalley群作用下的子代數軌道生成的格。 -
Then an thorough computer modeling using finite element program with material, geometry and state triple - nonlinear taken into account is carried out on a series of influencing factors, such as comparison with npn - beam splice connection, comparison of varies designed theories, and the varying of fraction coefficient, diameter, grade, pretension and arrangement of bolts, thickness of web and flanges of beam and column, splicing location, axial loading on column, etc. lots of useful conclusions are drawn form computer modelling. finally, design and construction suggestions are given out. this study fills the black in the field of steel beam - to - column connection with cantilever beam high - strength bolted - splicing at both home and abroad
然後，本文在考慮材料、幾何和狀態三重非線性的基礎上，對該連接形式進行了全面的計算機模擬，主要考慮了帶懸臂梁段全螺栓拼接的樑柱連接節點與無拼接的樑柱連接及翼緣對接焊接腹板拼接的連接節點的對比，各種設計方法之間的對比，以及翼緣拼接和腹板拼接的螺栓間距、直徑和數量，拼接點與梁端之間的距離，梁和柱的翼緣、腹板厚度，柱的軸力，接觸面的摩擦系數，翼緣和腹板拼接板的厚度等因素的影響。 -
4 ) the method for rapid implementation of parameterized modeling of geometry and finite element of structure through a universal cae software ( msc. patran ) is researched, and parameterized modeling of the obturator of the breech mechanism is accomplished using the method
研究了在通用cae軟體（ msc . patran ）環境下，快速實施結構幾何和有限元參數化建模的方法，並對炮閂閉氣結構實施了參數化建模。 -
3 ) a 3 - d geometry and finite element model of the assembly of the obturator of the breech mechanism is established. quasi - static and dynamic finite element analysis of stiffness, strength and obturating performance of the obturator of the breech mechanism is carried out, based on elastoplastic theory and multi - body contact algorithm, and the simulation results coincide with experimental results, further, th e effect of friction factor on its obturating performance is investigated
建立了炮閂閉氣結構的三維裝配體幾何實體模型和有限元模型，對炮閂閉氣結構剛強度和閉氣性能進行了準靜態及動態多體接觸彈塑性有限元分析，分析結果與試驗結果相吻合，進一步研究了摩擦系數對其閉氣性能的影響。 -
Cohesive models furnish a complete theory of fracture that is not limited by any consideration of material behavior, finite kinematics, non - proportional loading, dynamics, or the geometry of the specimen
內聚模型作為一個完全的斷裂理論，不被任何材料特性、有限運動、非比例載荷、動力學或是試件的幾何尺寸所限制。 -
On the basis of many years experience in the relevant methods and processes of our customers we model with the help of finite element analysis the optimum geometry of transducers or sensors as well as the perfect positioning of the measuring units
我們對客戶的生產方法和工藝有很多年的經驗。在這個基礎上，我們利用有限元分析方法fem分析模擬轉換器和傳感器的最佳排列以及測力單元的最佳分佈。 -
2 ) the inductance transducer used to identify large wear particle is developed. the analytical theory of wear particle and detection windings are expatiated and inner magnetic distribution of inductance transducer is discussed, the geometry parameters are optimized by using genetic algorithm, and the finite element analysis method is used in the designing
2 ）研製了識別大磨損顆粒的材質和測定其粒度的電感傳感器，闡述了磨損顆粒與檢測線圈的解析關系，探討了傳感器的理論基礎，分析了電感式檢測傳感器內部的磁場分佈，並應用遺傳演算法優化了傳感器幾何參數，最後進行了有限元模擬分析。 -
The main achievements are as follows : the theory models of defect mfl field are set up ; based on the magnetic dipole model and finite element model, the distribution of defect mfl field is simulated in the dissertation ; the component of flux density ( magnetic filed ) parallel to the surface of pipe is detected by a circumferential array of hall probes ; the factors including defect geometry parameters, defect surface angle and shape, pipe material, field intensity, vehicle velocity, background magnetization, operating pressure and remanent magnetization and so on influence the mfl signal characteristics
採用霍爾元件作為缺陷漏磁檢測傳感器，獲得管道軸截面漏磁場切向分量的漏磁信號；研究了缺陷外形尺寸、缺陷傾角和形狀、管道材質和磁化強度、檢測儀移動速度、管道背底磁場、管內壓力和剩磁對漏磁信號的影響。提出了各通道增益放大、各路漏磁信號偏離調整、波形微分、數字濾波和平滑等漏磁信號預處理方法；分析了等空間采樣的漏磁信號轉換為等時間采樣信號的必要性，研究了漏磁信號的小波去噪方法。 -
On the great deal of detailed geological mapping resource, this thesis has in - depthly studied the tectonic geometry, kinetics, dynamics and the meaning in the development of the crust of this region by means of structure resolution, macrostructral and microstructural observation, finite strain measurement
論文以大量翔實的野外資料為依據，通過構造解析、宏微觀構造觀察、有限應變測量等方法對該區構造的幾何學、運動學、動力學以及其在陸殼演化中的意義進行了較深入的探討。 -
The control equation consist of completely coupled deformation equation, seepage equation, conduction and convection equation of heat, which describe the reservoir non - liner performance. 2, present the detailed strategy and methods to solve this mathematics model, the basic strategy as follows : regard the deformation equation ? seepage equation conduction and convection equation of heat as separate system, and solve the equation by coupling and iterative method ; disperse the control equation in the geometry field by the finite element method ( galerkin ), and in the time field by the finite difference method : programme the computer program on this task ; when the solving, take the combinative measures of the thick and thin mesh ; successfully carry out the numerical simulation in vast 3d heat extraction system of hdr
2 、提出了高溫巖體地熱開發的固、流、熱多場耦合數學模型的數值解法，其基本的求解策略是：將固體變形，流體滲流與溫度場方程看成獨立的子系統，耦合迭代求解；利用有限元離散（ galerkin ）方法將控制方程在幾何域上離散，並用差分法得到時間域上的離散方程，並在此基礎上，編制了相應的計算機源程序；有限元求解中，為減小邊界效應的影響，在計算中採取粗細網格結合的方法，順利地實現了高溫巖體地熱開發三維巨系統的數值模擬。 -
Numerical results all indicate that the two axisymmetric finite elements exhibit better numerical precision, excellent performance at the nearly incompressible limit and distortions of the element geometry, and element performances are improved after optimization. the layout of this thesis is follows
具體表現是：對畸變網格有很好的適應性；計算可靠，不發生poissonlocking現象；對雙線性等參元的粗網格精度有很好的改善。 -
And some other construction methods based on finite geometry, graph theory and group theory are also depicted. an algebraic construction method for ldpc codes with 8 - girth is proposed based on complete residue system. simulation results show that these codes can achieve better performance than randomly constructed regular ldpc codes over awgn channel
最後，在分析、研究現有構造方法的基礎上，基於代數中的完全剩餘系，作者提出了一種代數構造方法，使得ldpc碼對應因子圖上的圍長為8 ，並採用計算機對其性能進行了模擬，結果表明該碼能夠取得比較理想的譯碼性能。
分享友人