geometrical element 中文意思是什麼

geometrical element 解釋
幾何元素
  • geometrical : adj. 1. 幾何學的，幾何圖形的。2. 按幾何級數增長的。adv. -rically
  • element : n 1 要素；成分；（構成）部分；分子。2 【化學】元素；【數學】元，素；【機械工程】單元；單體；【無...
  1. 4. from the point of view of inverse problems in mechanics, two trains of thought for solving ics / ibs computative problems, i. e : by means of intelligence computation method without geometrical modeling and by the aid of finite element inverse analysis method with geometrical modelingare expounded. by comparing these two methods, a feasible, integrated and modularized solution

    從力學反問題的角度出發，闡述了智能橋梁結構的智能計算問題的兩種西南交通大學博士研究生學位論文第n頁思路一一無模型力學反問題的計算智能法解決思路以及有模型力學反問題的有限元法解訣思路。
  2. At present, auralization software and research fruit based on geometrical acoustics ca n ' t solve problems above. in this dissertation, the finite element method ( fem ) and adaptive finite element method ( afem ) to auralization in small enclosures are presented. relative problems are studied and some effective approaches for the problems " settlements are given

    本文將波動聲學為理論基礎的有限元法（ finiteelementmethod ，簡稱fem ）及自適應有限元法（ adaptivefiniteelementmethod ，簡稱afem ）成功地引入到小尺度封閉空間可聽化研究中，對相關問題進行了深入研究，提出了一系列解決問題的有效方法。
  3. Time delay estimation ( tde ) by using three - element linear array is an important problem in torpedo trajectory tracking system which ttacks target according to strictly geometrical position. it is the basis of measurement of target distance, bearings etc. the error of tde influences directly the accuracy of trajectory tracking. the more efforts have been made in order to acquire high accuracy estimation

    三元直線陣的時延估計是魚雷彈道測量系統中的一個重要課題，它依照嚴格的幾何關系進行目標定位，是測量目標距離、方位等參數的主要依據，時延估計的精度直接影響彈道跟蹤系統的精度，為提高時延估計精度人們進行了大量的研究和探索。
  4. The stability behavior of kiewitt ' s suspen - dome was analyzed on the initial state. by the geometrical nonlinear finite element method, the equilibrium path is traced using the cylindrical arc length technology and incremental newton - raphson method. the influence of kinds of parameters is studied

    採用非線性有限元理論，結合牛頓荷載增量法和柱面弧長法的跟蹤技術，對kiewitt型弦支穹頂結構進行了考慮幾何非線性的全過程分析；為了掌握各個參數對靜力穩定性的影響程度，進行了參數分析。
  5. The thousand roofs, dense, angular, clinging to each other, composed, nearly all, of the same geometrical element, offered, when viewed from above, the aspect of a crystallization of the same substance

    那成千上萬的屋頂密密麻麻，有稜有角，粘附緊貼，幾乎都是由一幾何原理構成的，俯瞰之下，呈現出同一物質的晶體狀態。
  6. The analytical example is min - river cable - stayed bridge, which is the third longest cable - stayed bridge and the longest composite beam cable - stayed bridge in the world, with main span 605m. the paper set up a 3d model of the bridge with ansys finite element program, considering the geometrical and material non - linearity

    以青州閩江大橋這座主跨長605m的大跨度疊合梁斜拉橋為例，利用ansys大型通用程序建立成橋階段、懸臂階段的空間模型，在計算中考慮了材料非線性和幾何非線性的影響。
  7. The main contents of the paper are : ( 1 ) review the state and art for fiber - wound vessel with metal inner lining ; ( 2 ) provide a method to present the technical features including wound process, equal stress dome and fiber gathering at the dome etc. ( 3 ) establish a finite element analysis model considering nonlinear physical and geometrical effects and develop a equivalent constitutive relation for winding graphite fiber reinforced plastic layers ; ( 4 ) set up a failure criterion for the inner metal lining and winding graphite fiber reinforced plastic layers ; ( 5 ) develop a corresponding engineering analysis code based on the commercial software ansys ; ( 6 ) investigate the plastic deformation and residual stress in the inner lining due to winding tension and pre - tension, and stress distribution of the composite vessel under service loading case

    本文旨在為具有金屬內襯的纖維纏繞復合容器的參數設計提供分析模型、方法及工程軟體。論文主要內容是： （ 1 ）對復合容器分析國內外研究的概述； （ 2 ）復合容器的幾何表徵方法及工藝中若干力學問題； （ 3 ）復合容器結構分析的物理和幾何非線性有限元列式及其纖維層的等效本構關系； （ 4 ）復合容器的破壞類別； （ 5 ） ansys程序的二次開發； （ 6 ）典型復合容器的數值討論。本論文工作將對工程界復合容器設計和分析工作者具有參考價值。
  8. A ruled surface of revolution formed by an edged circle as the guide element is proposed in the category of basic geometrical bodies

    摘要在基本幾何體的范疇內，提出一種以棱圓為導元素的直紋曲面。
  9. The ansys finite element program is used to analysis the over - all stability of portal frames, with considering axial force, moment, and geometrical nonlinear effect. the the accurate effective length factors of gable portal frames are got

    用ansys程序對山形門式剛架進行了整體穩定分析，通過考慮軸力、彎矩、和結構的幾何非線性效應，得到了山形門式剛架精確的計算長度系數。
  10. Then bar element ' s tangential stiffness matrixes are deduced, which is based on the finite element method. the geometrical nonlinearity and material nonlinearity are both considered in the non - linear element stiffness matrix

    利用有限元方法，對網殼結構進行了幾何和材料非線性分析研究，推導了空間鉸接桿單元的幾何和材料非線性的剛度矩陣。
  11. During the finite element modeling of the bridge, the factors affecting the accuracy of the finite element model are discussed in detail, such as, the geometrical non - linearity of the cable including gravitational sag and initial tension, and the structural orthotropic steel box - girder deck to be equivalent to physical orthotropic deck by using compound material mechanics, and so on

    在建模過程中，盡可能多地考慮了一些影響全橋有限元模型精度的因素：如斜拉索的幾何非線性（重力垂度和初始應力） ，將構造正交各向異性鋼箱梁橋面板用復合材料力學的方法等效為物理正交各向異性板等。
  12. Based on the virtual work increment equation of updated lagrangian formulation, tangent stiffness matrix of spatial beam / truss element is obtained. according to base assumptions and catenary equation of cable, the iterative formulations of tangent stiffness matrix and nodal force of the spatial two - node catenary cable element are put forward. therefore the entire geometrical non - linear finite element theory for the analysis of suspension bridges is established

    本文的研究工作和取得的主要成果有: 1 .將大旋轉小應變空間梁（桿）單元與兩節點空間懸鏈線索單元結合起來，形成了一套完整的適合於懸索橋結構分析的幾何非線性有限元計算方法。
  13. The cold - formed square hollow section columns are widely used in various structures such as building structure, trusses, space frames and offshore plates etc. this paper is mainly doing the research on load carrying capacity of the cold - formed square hollow section columns under axial load, the paper includes the following main contents : ( 1 ) an elastic buckling stress for cold - formed square hollow section is presented by finite element analysis, and is compared with the result given by classical elastic buckling theory ; ( 2 ) the elastic - plastic non - linear behavior of the cold - formed square hollow section columns analyzed by ansys is presented ; ( 3 ) by using material model, and geometry nonlinear analysis, the cold - formed effect to stub columns of cold - formed square hollow section is studied ; ( 4 ) by using an material model, the geometry nonlinear analysis, the influence of initial geometrical imperfection to stub columns of cold - formed square hollow section is also analyzed ; ( 5 ) the load carrying capacity of the cold - formed square hollow section columns, which are including the cold - formed effect and influence of initial geometrical imperfection is analyzed by non - linear finite element, and the theoretical analysis results are compared with the results of experimental study and the results calculated by specification gb50018 - 2002

    冷彎方管作為軸心壓桿廣泛用於房屋結構、桁架、網架、塔架以及海洋平臺等結構中，本文主要研究軸心受壓冷彎方管的承載力性能，內容主要包括以下一些： （ 1 ）對冷彎方管的彈性臨界應力進行有限元分析，並與經典理論結果進行對比，以驗證有限元程序的適應性； （ 2 ）闡述冷彎方管採用有限元彈塑性非線性分析理論及應用ansys軟體的非線性分析方法； （ 3 ）採用彈塑性模型，考慮幾何非線性及材料非線性，對不同寬厚比的軸心受壓冷彎方管柱的冷彎效應進行有限元非線性分析研究； （ 4 ）考慮冷彎效應對屈服應力的影響，對不同寬厚比的軸心受壓冷彎方管短柱在不同初始變形下的承載力性能進行有限元非線性研究； （ 5 ）考慮冷彎效應、幾何初始變形，對不同長細比和不同寬厚比的軸心受壓冷彎方管長柱的承載力性能進行有限元非線性研究，並與試驗結果以及我國現行規范gb50018 ? 2002計算結果進行對比分析。
  14. Based on the steel - concrete coordinating relations, element stiffness matrix of geometrically nonlinear analysis, formulas for self - stresses by temperatures and displacements, stresses of corresponding superfluous structures are further studied. furthermore, a new theory and method for structural geometrical nonlinearity and buckling analysis is put forward

    根據鋼混協作關系進一步推導出鋼混組合構件幾何非線性分析單元剛度矩陣、溫度自應力及鋼混超靜定結構溫度位移和應力的計算公式，建立了一種新的基於鋼混協作關系的異種材料組合構件的幾何非線性和結構穩定性分析方法。
  15. Based on the geometrical non - linear finite element theory, a fine iterative method of simulating all construction stages of self - anchored suspension bridge is proposed and used to pingsheng bridge. the construction plans of suspension rod and second dead load are discussed in details. the model test of pingsheng bridge is completed

    此外，對平勝大橋的整體穩定性及極限承載力進行了分析，並在全橋模型上進行了超載試驗研究，結果表明，平勝大橋的總體穩定是有保障的。
  16. Firstly, the linear method is used in analyzing the finite element model of the bridge, mainly computes the stability coefficient and instability mode of the bridge, considering the constant load, the wind load and the various disadvantage load. secondly, the nonlinear stability is computed, considering the constant load to contrast the stability coefficient of the linear method with the nonlinear stability coefficient of results taking into account the geometrical nonlinearity and the double nonlinearity

    在線彈性特徵值分析中，主要計算了考慮恆載、風載、以及各種不利活載作用下的穩定安全系數以及失穩模態;在考慮非線性影響的穩定分析中，只考慮了恆載，主要是來分析對比幾何非線性、雙重非線性下的穩定安全系數與特徵值穩定安全系數的差別。
  17. Then an efficient and more accurate nonlinear finite element procedure based on the plastic node method ( pnm ) by combining elastic large displacement analysis theories with a plastic hinge model is presented to analyze the ultimate strength, directly accounting for the geometrical and material non - linearity and the influence of initial deformation and residual stress

    然後採用塑性節點法，考慮結構的幾何非線性和材料的非線性雙重以及各缺陷因素影響，分析了不對稱船體結構的極限強度。通過與實驗值的比較，說明簡化方法與塑性節點法都能較準確預報極限強度。
  18. The numerical modeling and calibration considers the following aspects : the element types, the modeling of the weld, the modeling of the members and the behavior of material and geometrical non - linearities. 4, in the parameterical study, a amount of joints with the variable joint parameters under different load - case are analyized. based on the analytical formula and the experimental and numerical results, design recommendation on the static strength for such connections are proposed

    （ 4 ）參數研究:運用已經建立的數值模型，對平面x型和空間xx型相貫節點在各種工況作用下的靜力工作性能進行了大量系統的參數研究，並與現有設計指南和規范進行了比較，從中得出了各節點參數對極限承載力影響的一些規律。
  19. Polymer gradient refrective index ( grin ) micro - sphere - lens are a new - type optical element of very simple geometrical shape, whose optical function is mainly achieved by the inhomogeneous reflective index distribution of the medium

    梯度折射率（ gradientrefractiveindex ， grin ）微球透鏡是一類具有極簡單幾何形狀的新型光學器件，主要依靠介質內特殊的非均勻折射率分佈實現其各種光學功能。
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