transient field method 中文意思是什麼

transient field method 解釋
瞬變敞
  • transient : adj 短暫的，一時的；過渡的；匆匆而過的；易逝的；虛幻的，無常的 （opp lasting permanent）; 【物理...
  • field : n 菲爾德〈姓氏〉。n 1 原野，曠野；（海、空、冰雪等的）茫茫一片。2 田地，牧場；割草場；〈pl 〉〈集...
  • method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. Introducing the theory and application of boundary element method on the sound radiation, giving the process of solving vibration noise radiation problem using boundary element analysis software ; presenting the coupling theory and the combination analysis of finite element method and boundary element method, and doing relevant analysis based on close drum shell ; programming the noise data simulation program using the numerical calculation software, simulating the acoustic and pressure data of a key point in the transient response acoustic field of the close drum shell, realizing the audibility of the noise, using the virtual reality tools to simulate the vibration noise of the drum shell ; combining the finite element method and boundary element method to analyze the vibration noise radiation of some gear box, and completing the whole simulation process of the vibration noise of the gear box

    綜合介紹了邊界元法在聲輻射問題上的理論及應用；並給出了運用邊界元法分析軟體求解振動聲輻射問題的過程。闡述了有限元法和邊界元法的耦合理論及組合分析方法，並以封閉鼓形薄殼為分析對象進行了相應的分析。利用數字計算軟體編制了噪聲數據模擬程序，並模擬了通過組合方法分析封閉鼓形薄殼瞬態響應聲場而獲得一關鍵點的聲壓數據，實現聲音的可聽化，隨后通過虛擬現實工具實現了該情形下橢球殼振動噪聲的虛擬模擬。
  2. Being a method of time - domain electrical magnetic surveying, the transient electromagnetic method ( tem ) can transmit first pulse electromagnetic field to underground making use of loop or electrical source and receive secondary induction field during of the pulse intermission

    瞬變電磁法是一種時間域電磁測量方法，是利用不接地回線或接地線源向地下發送一次脈沖磁場，在一次脈沖磁場的間歇期間，採用不接地線圈接收感應二次磁場。
  3. On the basis of experimental research, this thesis applies 2 - dimensional non - linear finite element method to the analysis of transient temperature field on the section by means of relatively high precision triangular element of six joints. when the temperature field is analyzed, finite element reseaus are divided in space field and finite difference reseaus are divided in time field, and then the program is compiled. the computing results are in good agreement with the test data

    在試驗研究的基礎上，本文採用精度較高的三角形六結點單元對構件截面二維非線性瞬態溫度場進行了有限元分析，即在空間域內採用有限元網格劃分，在時間域內採用有限差分網格劃分，據此編制了計算程序，計算結果與試驗數據符合較好，程序穩定性好，精度滿足要求。
  4. Since the departing process of fire work departing installation is a highly nonlinear transient dynamic process, it relates to many speciality field, and the characteristic of the material is very complex under the highly rate and highly pressure distortion, the design methods and the design formulae by experience which has been used for a long time are very limited, the facter which truly affect the departing process of fire work departing installation cannot been reflected in the design calculation, the structure modelling and optimization of the fire work departing installation is cannot been carried out by the traditional optimization method

    由於火工分離裝置的分離解鎖過程是一個高度非線性的瞬態動力過程，涉及多個學科和專業領域，而且材料在高速高壓條件下瞬時性態十分復雜，長期以來所沿用的經驗設計方法和設計經驗公式的局限性很大，對火工分離裝置分離解鎖過程一些實際有影響的因素不能定量地反映到設計計算中來，採用傳統優化方法無法實現火工分離裝置的結構優化建模和計算。
  5. In this paper, by using monte carlo method with irregular grid random walk in time - space domain the problem of mass concrete transient temperature field was solved

    摘要利用求偏微分方程的蒙特卡羅演算法，通過在時空域中不規則網格隨機游動來求解大體積混凝土不穩定溫度場。
  6. The third chapter is experiment analyses of multi - aperture transient electromagnetic method, it analyzes multi - aperture transient method in theory and discusses radiation direction characteristic of first field by means phased array theory and integrating result of experiment contrast. according to kinematics character it also brings forward similar interference concept and analyzes reason of similar interference phenomenon, it gained footing between similar interference item and depth on the base of it and experiment formula

    藉助于相控陣原理的思想，結合模擬實驗觀測值對比結果，對多孔徑tem方法進行模型分析，詳細討論了多孔徑一次場的輻射方向特性，利用光波的運動學特徵提出類相干的概念，分析了多孔徑tem輻射源存在類相干現象，推導出類相干實驗公式，並得出類相干項與多孔徑框邊長以及埋深的關系表達式和。
  7. In order to improve the prospecting precision to the earth of transient electromagnetic method ( tem ), the idea of tem imaging is proposed according to the characteristics of both electromagnetic wave propagation and response : the wave - impedance is calculated from observed data in - field by the way of inverse - faltung and linear digital filter ; the sequence of reflection coefficients corresponding to every tiny - lever move time is calculated by the way of linear programming, and the imaging result section is drawn consequently

    摘要?提高瞬變電磁法的對地探測精度，從瞬變電磁場的傳播特性和電磁響應特性兩個角度?慮，提出了瞬變電磁成像方法：由野外實測磁場感應數據，經過反褶積和線性數字濾波求出波阻抗；用線性規劃法求出每一微層走時所對應的反射系數序列，並以此?參數繪製成像結果圖。
  8. Taking core loss into account has important effect to improve the torque performance of the motors " field oriented control. in this paper, the transient mathematical model of the asynchronous motor with core loss is setup. the method is proposed that minimizes the loss in a variable speed and torque at the synchronous rotating coordinate

    在對損耗分析的基礎上，建立了考慮鐵損時異步電機的動態數學模型，推導出在同步旋轉坐標系下變速、變轉矩時使電機功率損耗最小的方法，並且結合矢量變換提出了基於快速轉子磁場定向的矢量控制。
  9. The paper presents a solution method for the transient temperature field, in which the finite element method or the finite difference method is used to get discrete structure, and the finite difference method is used to get discrete time in order to simplify the transient thermal conductive equations as a set of linear equations as a set of linear equations at different moment

    本文提出對空間採用有限元法或有限差分法，而對時間採用有限差分法將瞬態熱傳導方程簡化為不同時刻的線性方程組以求解瞬態溫度場，用以求解大體積混凝土在固化過程中不同時刻的溫度分佈。
  10. By simulating of transient field in the photoconductor of thz photoconductive antenna, the curve of instant electric current was given here, and the result was validated by fdtd method. the influence of transient field to thz out put was mentioned in this paper too

    通過對thz光電導天線中瞬態電場的模擬，得到了晶元內瞬西安理工大學碩士學位論文態電流的變化曲線，並通過fdtd方法對瞬態電流模擬結果進行了驗證。
  11. However, this is depend on the accurate simulation on nonlinear transient electromagnetic field, which relate with many aspects, include transient theory of machine, numerical calculation method, solving nonlinear equations, fem mesh generation and so on

    但是，這首先要依賴于對電機非線性瞬態過程的準確模擬，涉及到從電機的瞬態過程理論、數值計算方法、乃至非線性方程組求解和有限元剖分等多方面的問題。
  12. Nonlinear electric field transient finite element equation is performed based on the backward euler method and the variational principle

    摘要基於後退歐拉法和變分原理推導了非線性電場的暫態有限元方程。
  13. Abstract : based on the analysis of the pressure equation of filling flow in injection molding, finite - element method is employed to solve the transient pressure field with moving free form boundary

    文摘:在分析注塑充填流動壓力方程的基礎上，採用有限元方法求解充填過程中非定常、具有移動邊界的壓力場。
  14. This paper is based on the pingpong bridge field ground protection, it presents one point to ground protection scheme which include the self - checking method of switches. the two point to ground protection scheme presents self - adapting fault location warp criterion after evaluating the effect on the calculation of fault location made by the change of transient resistance in the process of bridge switch. in order to make up the shortcoming of location warp criterion, this paper presents a comprehensive scheme into which integrate the second harmonic criterion

    本文針對乒乓式保護，結合開關自檢方法提出了完整的一點接地保護方案：在兩點接地保護方案中估算了開關切換過程中過渡電阻變化對接地點位置計算的影響，提出了故障位置偏差式兩點接地的自適應判據，為了彌補該判據的缺陷，提出了結合二次諧波輔助判據的綜合方案。
  15. Based on the investigation of analysis methods for the overvoltage striking on rotating electric machines and its research status at home and abroad, the safety forecast theory and the analysis method for the switching overvoltage of large power stations are firstly presented based on the field - circuit analysis, and the transient field distribution and the insulation condition in the stator winding insulator stricken by the switching overvoltage in large power stations are studied and analyzed on line

    本文在分析和總結國內外關于旋轉電機過電壓分析方法及其研究現狀的基礎上，首次提出了基於場路結合的廠站操作過電壓安全預測理論和分析方法。本文研究了大型電站中的操作過電壓沖擊波在發電機定子繞組絕緣介質中暫態電場的實時分佈狀態，在線分析發電機的絕緣工作狀況，搜索發電機內部可能突發絕緣事故的區域，預測發電機內部可能發生絕緣事故的故障點，並重點研究了大型發電機絕緣安全在線預測分析方法和建立了大型發電機絕緣安全評估模型。
  16. For the purpose of determining the basic problems such as the computed field and the mesh sizes in the finite element method, the paper first deals with the problems of a semi - infinite soil domain with radiation damping and material damping through the transient response of a single pile, which are used in the finite element method

    本文首先利用單樁的瞬態響應來考察有限元計算中處理半無限土體的輻射阻尼和材料阻尼問題，以便確定有限元計算區域大小，網格尺寸等基本問題。
  17. According to practice of transient electromagnetic operators, this paper will introduce a new multi - aperture transient electromagnetic method integrating a lot of simulation experiment data on the base of its primary theory and transmission rule. in the end, result shows this new method can improve so much direction of electromagnetic field that it increases lognitudinal resolving power

    本論文根據瞬變電磁法勘探工作者的實踐，利用電磁波運動學特徵在討論其基本原理和電磁波傳播規律的基礎上，結合在論文過程中進行的大量模擬實驗資料，進一步引入了多孔徑瞬變電磁發射場源，實驗結果分析證明採用瞬變電磁多孔徑發射場源改善了輻射場的方向性，提高了瞬變電磁法勘探的垂向分辨力。
  18. This paper presents a new method to calculate temperature distribution of axisymetical body when both an initial temperature distribution is available and an environmental temperature is constantly changing, which is based on traditional transient heat conduction. a mathematical model for this new method has been established and is used to calculate the temperature field of the rotor

    根據傳熱學的基本理論建立了初始溫度分佈已知，環境溫度不斷變化時，圓柱體溫度場的理論計算近似方法，作為轉子溫度場計算的理論基礎，建立了溫度計算模型，同時通過使用ansys有限元分析軟體對建立的數學模型進行了校驗，達到了比較滿意的結果。
  19. During the research, some discussions such as how to solve transient problem using time - stepping method and how to solve nonlinear problem using n - r method are presented. finally, the nonlinear transient electromagnetic field of a 600mw turbo - generator is solved and the simulation results verify the methods

    在研究中，還對涉及到的相關問題如時步法對瞬態問題的處理、牛頓-拉夫遜法求解非線性問題作了探討，並以一臺600mw汽輪發電機為例，進行了結果模擬驗證。
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