計算限度 的英文怎麼說

中文拼音 [jìsuànxiàndù]
計算限度 英文
compute bound
  • 計 : Ⅰ動詞1 （計算） count; compute; calculate; number 2 （設想; 打算） plan; plot Ⅱ名詞1 （測量或計算...
  • 算 : Ⅰ動詞1 （計算數目） calculate; reckon; compute; figure 2 （計算進去） include; count 3 （謀劃;計...
  • 限 : Ⅰ名詞（指定的范圍; 限度） limit; bounds Ⅱ動詞（指定范圍, 不許超過） set a limit; limit; restrict
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 計算 : 1 （求得未知數） count; compute; calculate; reckon; enumerate 2 （考慮; 籌劃） consideration; pla...
  • 限度 : limit; limitation; measure; tether
  1. A highly efficient numerical algorithm by using multi - grid method ( mgm ) is introduced to solve the three dimensional field distribution in the present paper. formulae of the restriction and prolongation in mgm computation is deduced, and a 3d program of mgm is accomplished, which can solve the field distributions in electron optical systems for various electrostatic lenses. the 3d field distribution in an electrostatic concentric spherical model is tested with mgm algorithm and an algorithm based on finite difference method ( fdm ) respectively. comparing these two results in view of computational efficiency and computational accuracy, it appears that mgm is superior to fdm in solving electrostatic field distribution for the electron optics problem. this paper shows that the 3d field computation using mgm greatly improves the computational efficiency of field distributions in electron optical systems and shortens the computational time

    本文將一種高效率的數值計算方法? ?多重網格法引入三維靜電場分佈的計算，多重網格法利用限制和延拓可迅速求得滿足精度要求的場分佈.研究了求解各種靜電透鏡電子光學系統三維場分佈的多重網格法程序，驗算了靜電同心球模型的三維場分佈.通過與目前在場計算中常用的有限差分法進行比較，可以看出多重網格法的計算效率和計算精度優于有限差分法.本文表明利用多重網格法計算三維場大大提高了場分佈的計算效率，縮短了計算時間，因此為后續計算打下了良好的基礎
  2. Fem is a method of high speed and high fidelity

    有限元法具有計算速度快、精度高的特點。
  3. Abstract : the maximum tube distribution numbers in tube sheet limited circle for fixed tube sheet heatexchanger have been determinded by used of the superposition method with computer based on c language programming. it is characterized by determination the maximum tube distribution number according to the even number or singular number of center tube distribution. the method is simply and quickly, and can be used for the design and process calculation of heatexchangers

    文摘:採用迭加的方法，使用c語言編程在微機上實現管板布管限定圓最大布管數的確定.該方法可根據中心布管數是奇排列還是偶排列來確定最大布管數，簡便易行，計算速度快，對換熱器的設計及工藝計算具有實用價值
  4. According to eigenvalue equation ( general formula ) of the energy method of the plane steel frame structure stability, and considering the restriction of the end of the column of the main steel frame and function of deflection curve gained from the differential balance equation general resolution, we get the equation for calculating the length coefficient of the main frame structure stability of the steel arch gate and the resolutions are also given

    根據平面剛架穩定性能量法特徵值方程（通式） ，考慮弧形鋼閘門主框架柱的柱端約束的特殊情況，求出撓曲線函數（試解函數）通解，得到弧形鋼閘門主框架柱穩定性計算長度系數方程。其中弧門主框架主橫梁式形框架的臨界荷載比較現行規范推薦的有限元法簡單方便、結果精確及物理概念明確等優點。
  5. The calculation results are compared with the results that obtained by experiment. it is found that the calculation results are close to the experiment values. the finite element mentod has advantages in calculational precision

    計算結果與實驗結果的比較表明:兩種演算法所得結果與實驗結果基本一致，有限元法在計算精度方面具有優勢，而擬動力學法在計算效率方面具有優勢。
  6. The thesis also involves some detailed techniques come across in the numerical simulation process of elastic dynamic fem analysis, and remarks the theoretical foundation and applications to them, which covers mass scaling, hourglass deformation mode and dimensional compatibility

    本文還對彈性動力學有限元數值計算過程中遇到的若干技術細節進行了深入分析與探討。這包括質量縮放技術對時間步長的影響、單位制對計算速度的影響以及單元剛度單點數值積分的沙漏模態控制技術等。
  7. In order to search the demolishing effect pf the thermal stress on the hearth and bottom of the blast furnace, the distribution of temperature field and the thermal stress have been studied with the thermal elastic law and finite element method

    摘要為了探討熱應力對不同材質構成的高爐爐缸磚襯的破壞作用，在計算溫度場的基礎上，應用熱彈性理論和有限元法對高爐爐缸進行應力分佈計算。
  8. Based on the theories of gear engagement, contact analysis, friction and heat transfer, a three - dimensional finite element model of gear tooth was established to investigate temperature distributions and variations along the contact path over a range of applied loads and operating speeds with consideration of lubrication conditions. sensitivity analysis of surface temperature to gear configuration, frictional heat flux, heat transfer coefficients, and oil and ambient temperature was conducted and the major parameters influencing surface temperature were evaluated

    本文基於齒輪嚙合原理、輪齒接觸分析、摩擦學和傳熱學，以有限元分析方法和理論分析計算相結合為手段並以實驗測量結果作為參考，建立了適用於工業應用並具有較高計算精度的高速齒輪傳動輪齒溫度分析的模型和方法，系統地分析了輪齒本體溫度的大小和分佈以及齒輪幾何、載荷及轉速和潤滑冷卻條件等對輪齒本體溫度的影響。
  9. In this paper, the fundamentals of cable forces by frequency method are introduced. the curve fitting method is utilized to get the correcting formula of cable forces and frequency through the experiment. on the other hand, a kind of catenary line cable element is introduced in this paper, owing to the inaccuracy caused by correcting struss element in fem

    本文還介紹了頻率法測索力的基本原理，並通過試驗，利用曲線擬合法得出索力頻率之間的修正關系式；其次，由於有限元計算中，索元所採用的修正桿元所帶來的不精確性，對于長索其精度更難保證，因此，本文介紹了一種計算精度高、工作量小的懸鏈線索元。
  10. In this dissertation, the numerical computation for the acoustic radiation problem ( arp ) is studied deeply and systematically in the theory, method and the application technique, based on analyzing the situation of the home and abroad on the numerical computation for the acoustic radiation problem. the calculation formulas of the boundary element method ( bem ) for the exterior acoustic radiation problem in the full - space and half - space are deduced, based on the wave propagation theorem ; the arising of the non - unique solutions, which is associated with the application of the boundary integral equation ( bie ) in acoustic radiation problem, is analyzed and proofed ; the improved combined helmholtz integral equation formulation ( ichief ) is presented to overcome the non - uniqueness problem more effectively and reliably ; the determination of the singular integral coefficients on various occasions is analyzed ; the properties and treatments of the singular integrals with different orders axe studied ; the computation program of the cubic spline ichief is developed and its ability to overcome the non - uniqueness problem and feasibility to discrete the surface coarsely with the sufficient calculation precision are examined through examples

    第二章在聲波動理論基礎上，詳細地推導出對應于無限域和半無限域的外部振動聲輻射問題的邊界積分方程計算公式；根據fredholm積分理論，對利用邊界積分方程計算振動聲輻射問題過程中解的非唯一性的產生進行了分析和證明；改進了chief法以提高其克服解的非唯一性的有效性和可靠性；對不同條件下奇性系數的計算、強奇性積分的收斂性及其在變量替換時與普通積分的差異性、不同階奇性積分的計算、數值求積分等進行了研究；開發了三次樣條改進chief法計算軟體，並通過算例考核了該方法在特徵波數處克服解的非唯一性的有效性和在保證計算精度的前提下實現剖分粗化以提高計算效率的可行性。
  11. The study shows that limited difference forward method has higher precision and computing speed in geo - electrical forward modeling

    研究表明，利用有限差分數值方法進行復雜地電模型的正演計算，計算速度快，計算結果精度較高。
  12. Considering the feature of subgrade deformation, the off set limit and the settlement calculation depth are discussed in this paper

    並結合路基變形特點，對軟土層的屈服極限、沉降計算深度等問題進行了探討。
  13. The one - step method is used to calculate the original curve. this method can get original blank curve directly from part shape and compute very fast

    而用於優化的初始輪廓線，本文採用的是有限元逆演算法，即一步演算法求得，該方法由最終零件形狀直接計算出初始板料，計算速度快。
  14. These methods are following : ( 1 ) in order to build fem model conveniently and enhance calculating speed, interceped a finite length and built a 2d - symmetry model. ( 2 ) in order to apply loads conveniently, kept the entrance of cold fluid. ( 3 ) in order to obtain numerical results in steady situation, lengthened export and import ends

    這些方法主要有： （ 1 ）為了便於建立模型並提高計算速度，對于實際工程中採用的長徑比特別大的換熱管採取截取有限長度的方法並建立二維對稱簡化模型； （ 2 ）提出採取保留冷流體入口端，截取有限長度的方法施加載荷； （ 3 ）適當延長翅片管的出口端和入口端，以便獲得穩定工況的數值解。
  15. In order to reduce the calculation scale of the simulation, three dimension finite element relocating mesh model, which is controlled by the age of concrete, is presented. it " s rationality is argued theoretically. through the comparison by the fixed mesh method, it can be concluded that this model is effective, the precision can be assured and the amount of the calculation is reduced

    為了降低模擬計算的規模，本文提出了以混凝土齡期為判斷條件來控制網格浮動的三維有限元網格浮動計算模型，並從理論上分析論證了該模型的合理性，通過與固定網格法計算結果對比得出：該模型是可行的，並且在保證計算精度的前提下大大減小了工作量。
  16. The stability of the landslide is a critical problem for feasibility of the project, and has a direct influence upon the operation of the lower reservoir and the power system. the sliding mass has been studied by some designer in geological investigation. the study showed that guishan sliding mass is in stabilization under natural condition, is not in stabilization under vii earthquake intensity

    在前期的研究中曾對滑坡體的穩定問題進行了研究，研究結果認為從宏觀定性分析，滑體處于穩定狀態，但經過計算，在度地震烈度下，處于極限平衡或不穩定狀態，為確保工程安全，對推動式的龜山滑坡體採取削坡減載的開挖方式將是行之有效的方案，這樣可以提高滑坡體在地震條件下的穩定性，因此，研究龜山滑坡體在不同開挖方式方案條件下的穩定性問題具有非常重要的實際意義。
  17. Abstract : in this paper, first fe simulation algorithms for contact search, contact constraint, and the calculation of contact and friction loads were established based on the analysis for contact friction problem in sheet metal forming. then the fe simulation model for contact friction problem in sheet metal forming was set up. at last, the efficiency & amp; stability of this model was proved to be satisfactory by the comparing numerical example and experiment results of skin stretch forming

    文摘:本文在分析了板料成形過程接觸摩擦問題特點的基礎上，提出了接觸搜索、界面滑動約束、法向接觸力以及摩擦力計算等問題的有限元模擬演算法，建立了板料成形過程接觸摩擦問題的有限元模擬模型，最後通過數值算例與飛機蒙皮拉形模擬試驗結果的比較，驗證了此模型計算精度及數值穩定性良好。
  18. The accuracy of reliability calculation was improved in the derivative sfem method. the local derivatives of fem and numerical method were used to obtain the iterative formulas of the performance function ' s local derivatives. the procedure is relatively simple and adaptable to engineering application as the stiffness matrix formed and decomposed only once

    偏導sfem可靠度法求解構件疲勞可靠度，可靠度計算精度得到改善，通過有限元求偏導，結合數值微分技術，推導出了功能函數的偏導迭代格式，只需一次形成和分解總綱，計算較簡便，適合工程應用。
  19. The temperature stress is analyzed by formula and numerical method respectively ; and the fit temperature step is obtained. the interactions of undamaged pavement and soft clay ground, damaged pavements and soft clay ground are studied under the conditions of temperature change

    其次，採用公式法和有限單元法計算一維瀝青混凝土桿低溫下變溫的溫度應力，通過分析給出了採用有限單元法計算溫度應力時的合適溫度步長。
  20. Based on the previous research results, the author takes nonlinear temperature load equivalent to linear temperature load and calculates temperature stress by fem. it analyses the whole and the part temperature effect on rigid - framed arch bridge and compares different thermal stress of different bridge structure by the simplified methods. the research offer advices for this new style bridge

    本文在總結前人工作的基礎上，分析探討將非線性溫度荷載等效為線性溫度荷載，同時採用有限元計算溫度應力的簡化方法；並利用這種計算方法對剛架拱橋的整體和局部的溫度效應以及不同橋型溫度效應的不同進行了分析比較，為這種新橋型的工程設計提供參考，還通過實測結果驗證上述方法的正確性，並進行了修正。
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