邊界元素法 的英文怎麼說

中文拼音 [biānjièyuánsùfǎ]
邊界元素法 英文
bem （= boundary element method）
  • 邊 : 邊Ⅰ名詞1 （幾何圖形上夾成角的直線或圍成多邊形的線段） side; section 2 （邊緣） edge; margin; oute...
  • 界 : 名詞1 （相交的地方; 劃分的界限） boundary 2 （一定的范圍） scope; extent 3 （按職業、工作或性別等...
  • 素 : Ⅰ形容詞1 （本色; 白色） white 2 （顏色單純） plain; simple; quiet 3 （本來的; 原有的） native Ⅱ名...
  • 法 : Ⅰ名詞1 （由國家制定或認可的行為規則的總稱） law 2 （方法; 方式） way; method; mode; means 3 （標...
  • 邊界 : boundary; frontier; border; borderline; edge range line; periphery
  1. A new waveguide made of changing a wide wall of a rectangular waveguide to a uniform curved wall is called conformal waveguide. a kind of expression of approximate solution for domain mode of the new waveguide, including symmetric, unsymmetric arc, parabolic arch, hyperbolic arch, elliptic arch, etc., is constructed by using boundary condition of mental waveguide, variational method and boundary element method. by using the equivalence principle, an approximate calculating formula for equivalent resonant conductance of a narrow longitudinal halfwavelength slot cut in the curved wall of the unsymmetric arcrectangular waveguide is derived, and the result is shown. although this solution is approximate, it can solve the problem in designing the slotted antenna of such conformal waveguide

    把矩形波導一個寬面外突成均勻曲面構成的新波導統稱為共形波導.利用金屬波導邊界條件、變分法、邊界元素法構造這種新波導中主模場的一種近似解表達式，包括曲面橫截線為對稱、非對稱圓弧，拋物線弧，雙曲線弧，橢圓弧等.然後根據等效原理，推導非對稱圓弧矩形波導曲面上窄的縱向半波長縫隙的等效諧振電導的近似計算公式，給出計算曲線.這種解雖然是近似的，但卻能解決這類共形波導縫隙天線的工程設計
  2. We analyzed the effect of such factors as grids size, boundary shape of region, and relaxation factor on the convergence of this iterative calculation by calculating two - dimensional iterative calculation examples. we take its conclusions as the three - dimensional iterative calculation ' s references

    利用二維算例分析了單元大小、區域邊界形狀、鬆弛因子的大小等因素對迭代收斂性的影響；在三維迭代計算方法的研究中參考、印證了這些結論。
  3. We use approximate method to fit the accurate results and find a fast and rather accurate way to design waveguide narrow - wall slots array

    利用邊界元素法即可求解出二維問題的解后再做逆fourier變換即可。
  4. Topics include : mathematical formulations ; finite difference and finite volume discretizations ; finite element discretizations ; boundary element discretizations ; direct and iterative solution methods

    課程主題有：數學列式、有限差分與有限體積離散、有限元素離散、邊界元素離散、直接與疊代解法。
  5. All calculations are in the hypothesis of " ideal slot ", that is the slots are so narrow that longitudinal field along the slots can be ignored and all fields are independent about the z - coordinate

    在當中忽略縫隙口面場隨縫隙傾角變化而在z方向上產生的變化? ?即認為場量與z無關。在此前提下可以將三維問題簡化為二維問題，用邊界元素法直接求解。
  6. At the meantime, the rock mass may alternate between loading and unloading and it exists in certain kind of liquid, such as surface water, unconfined water, confined water etc for its intrinsic crannies. the practical rock mass concerned project must solve the key stability pr oblem after the understanding of the complicated mechanical characteristic and the deformation trends to guide the following project design and construction for the demand of security, economy, feasibility and validity. however, the intrinsic nonlinearness and complexity of the engineering rock mass become the main difficulty to predict the stability and deformation, the corresponding structure design must ensure enough safety with all the determinate or random force combination, so a model without the geometry distortion and constitutive equation warp is necessary to be built for the quantificational analysis of practical structure ' s stress, for the simulation of the real process and for the determinate evaluation system and optimization

    由於實際工程巖體其固有的非線性和復雜性，使得求解對應的諸如其穩定性、變形等問題面臨較大的困難，而有關的工程結構的設計必須保證該結構在外來因素的作用下具有足夠的安全度、經濟性和合理性，這必然要求對巖體及其工程結構的受力與變形有一套量化評判體系和優化技術，抓住實際工程問題的本質特徵並建立可行的符合幾何模擬、本構模擬、受力模擬、過程模擬四原則的求解模型，通過該模型的數值模擬成果來指導巖體工程的設計、施工及運營、管理；而巖體結構面的存在使得基於傳統連續介質力學理論的理論分析和數值模擬面臨巨大的挑戰，物理模擬的試驗周期和成本也大大增加，而巖土體工程問題則成為典型的數據有限、了解程度有限類問題，這類問題的解決需要綜合應用理論分析、經驗判斷、物理模擬和數值模擬等方法，數值模擬可以完成目前許多技術手段無法完成的實驗，如參數控制，復雜條件下的邊界條件的處理，同時數值模擬具有高可重復性，且數值模擬的成本和人力開銷等遠低於物理模擬，因此研究巖土體工程問題的流形元數值模擬方法是一項具有理論和實際工程應用價值的重要課題。
  7. This paper has a further study on the key technology called validity maintenance mechanism in semantic feature modeling in order to maintain the intent of designers and satisfy them. the method combines geometry model and semantic feature modeling, setting up new feature representation 、 cell element naming and identification method. in the meantime, a history - independence interactive feature boundary re - evaluation algorithm is presented based on feature editing. moreover, the validity recovery mechanism after invalid feature operation can maintain the original feature model. the above ideas have been realized on hust - caid ( computer aided industry design system developed by harbin university of science and technology ) preliminarily

    為了能夠正確地維護設計者的設計意圖和滿足用戶的需求，本文在原有造型的基礎上對語義特徵造型中的關鍵技術即有效性維護機制進行深入的研究，將幾何模型，語義特徵模型結合起來統一進行研究，建立了語義特徵造型在產品模型設計過程中特徵表示方法的新理論、細胞元素命名方法和辨別機制，同時對系統原有特徵編輯過程進行了研究，提出了獨立於歷程樹的特徵邊界重構演算法以及模型操作無效時的有效性恢復方法。
  8. In this paper taking nanjing changjiang immersed tunnel as an example, the author made a research of aseismatic analyses of immersed tunnels by introducing fem, and also, made a further discussion of factors such as depth, geologic conditions, water and boundary conditions

    本文利用南京長江沉管隧道的基本資料，探討了如何利用動力有限元法對沉管隧道進行抗震分析，並利用這一方法分析了埋深、地質條件、水、邊界條件等因素對沉管隧道地震反應的影響。
  9. The results of landscape classification indicate that the classification of function and configuration of rural landscape is a comprehensive and applied method which can meet the requirements of both rural landscape planning and rural landscape mapping of large scale, further, embody the characteristics of rural landscape in china. its landscape units which are classified by physiognomy and land use unit not only take on obvious characteristics of spatial configurations and relative single land utilization types, but also its classification indicators can be quantified easily

    研究結果表明，該方法能夠反映實際存在的各種景觀類型，充分考慮到了影響鄉村景觀類型的自然因素和人為因素，所劃分得景觀類型單元具有明顯的空間形態特徵和相對單一的土地利用方式，邊界較易確定；能夠滿足大比例尺鄉村景觀規劃和制圖的需要，體現了鄉村景觀的特點，是一種比較綜合的實用性方法。
  10. The four basic processing operations of 3d triangulation algorithm composed by boundary loop extending, splitting, merging and closing are summarized, the triangulation for any type of surface can be considered as the combination of these four basic processing operations, which makes the algorithm have great adaptability and can deal with scattered data points of diversified surface

    通過分析各種曲面的特點，總結出邊界環在空間擴展、分裂、融合和封閉是3d三角劃分演算法的四個基本過程元素，任何類型的曲面的劃分過程均為這些基本過程元素的有機結合，使得演算法具有很強的適應性，能夠方便處理各種類型曲面的散亂數據。
  11. When we solve irregular problem, a trial solution of the differential equation is written as a sum of two parts : a radial basis function network satisfies the boundary conditions and svr is trained for the inner points

    在求解不規則邊界邊值問題時，演算法基於兩種不同學習方法的協作：徑向基函數學習網路（簡稱rbf ）用以滿足邊值條件（ bc ' s ） ，支持向量機回歸用於逼近域內元素。
  12. Taking all the interval number s in the equations as optimal design variables and representing the lower and th e upper bounds of each interval number as the boundary constrain of the variable respectively, the maximum and the minimum of various components of the solution are achieved by using the constrained optimization method

    將方程組中的所有區間數都作為設計變量，區間量的變化區間作為相應的設計變量的邊界約束，運用約束優化法求出方程組解的各元素的最大值和最小值。
  13. Though analyzing the six factors of the place generation including " imaginable space structure ", center, path, edge, district and natural factor to reveal the forming manners of the place, and the reforming manners of space element

    本文通過對形成場所的六個要素： 「可印象空間結構」 、中心、路徑、邊界、領域、自然因素的引入的總結和分析，揭示空間場所的具體生成方式和形成空間元素的具體整合方法。
分享友人
分享到 Line

分享到臉書