numerical equivalent 中文意思是什麼

numerical equivalent 解釋
數值當量
  • numerical : adj 數字的；數值的；用數字表示的。 （a） numerical order 號數。 a numerical statement 統計。 the ...
  • equivalent : adj 1 相當的，相同的，同等的。2 【化學】等價的，當量的；【數學】等價的；等量的；等勢的；【物理學...
  1. So this base isolation technique has profound prospects. unfortunately there exist definite difficulties in the calculation because of the nonlinear of the base friction force. now, both the equivalent damping method and the numerical calculatin of the vibration response of the base - isolated buildings are frequently used in the calculation of the seismic response of the base - isolated building. however both of them have certain drawbacks. in this paper, the response of the building with base - isolation system is derived by the method of fourier expansion for the friction force and the earthquake response. at the same time, the sliding vibration character of inertia of a single mass structure and the sliding vibration response of a muti - mass structure are discussed. the stable condition of the sliding base isolation system of a structure is given. in the end, two circes of base fixation and base sliding are analyzed by adopting ansys

    本文利用對摩擦力和地震響應進行付氏級數展開的方法導出了基底具有摩擦隔震系統的地震反應。同時，文中從研究單質點結構的滑動振動慣性力入手，進而對多質點結構體系滑動振動反應進行探討，分別給出了結構滑動隔震的自身穩定條件。最後，本文利用ansys對基礎固定和基礎滑移隔震兩種工況進行了動力模擬模擬分析，進一步證實了基礎滑移隔規律。
  2. The content of this thesis comes from the fujian natural science found following research task 。 it studies on a space cantilever single beam attached to a moving support 。 inertia forces which are brought by the support ' s movement ， are acceded to the equivalent initiative forces and the equivalent initiative moments 。 when we consider the relation of the forces and deformation ， we change the method of material mechanical analysis to the elastic mechanical analysis 。 further more ， we discusses the feasibility of the method which uses the multi - rigid - body discrete model to simulate the dynamic characteristic of a elastic body 。 first ， the finite segment method is adopted to establish the models of the beam 。 based on kane ' s equations ， dynamic math - model for the beam are derived 。 and by use of c - language and runge - kutta procedure ， the computer - oriented procedure can give the whole responses of the beam 。 second ， with compare to the numerical examples ， the method which uses the multi - rigid - body discrete model to simulate the dynamic characteristic of a elastic body which is under the condition of movement is verified to be feasible 。

    本論文為福建省自然科學基金后續研究課題，以已知支撐運動的單個空間懸臂梁為對象，在等效主動力與等效主動力矩中加入支撐轉動引起的慣性力，並在考慮力與變形關系時，用更一般的彈性力學分析代替材料力學分析，進一步研究用多剛體離散模型來模擬其動力學特性的可行性。首先，用有限段建立機械臂的多剛體離散模型，用kane動力學方法建立其動力學方程。並用c語言編制演算法程序，採用了四階runge - kutta積分程序求解微分方程組，給出構件的全部動態歷程。
  3. Considering the stiffened plate as a composite system of grillage beams and slab, the superstructure as an equivalent rigidity plate, a semi - analytical and semi - numerical method, which makes use of compatible analysis of force and displacement among beams and slabs and columns and ground, is developed to analyze interaction between stiffened raft foundation and subsoil considering the rigidity of superstructure

    摘要將彈性地基上的梁板式矩形筏基視為十字交叉梁與平板組合體系，上部結構剛度簡化為等效剛度板，採用半數值、半解析方法，通過梁、板、柱以及地基之間力與位移平衡協調分析，可得到考慮上部結構剛度時梁板式筏基寫地基共同作用的半數值、平解析解。
  4. In this paper, on the basis of the numerical analysis with the concept of equivalent soil mass with reinforcement and shake table model test, the calculation of high loess embankment with geogrid - reinforcement in highway is carried out under static loading, and the dynamic response of high reinforced sand - gravel embankment with grogrid - reinforcement in highway is tested under earthquake. the behaviors of loess embankment are indicated as the following : ? he stress and deformation varies with reinforcement design conditions and foundation types

    本文通過將土工合成材料與土體視為加筋等效土體的數值計算方法和振動臺模型試驗，以加筋黃土高路堤和豎直擋板加筋砂礫土高路堤為研究對象，計算分析了不同堤基上不同加筋設計條件下黃土高路堤的靜應力及變形變化規律，試驗研究了不同加筋條件下砂礫土高路堤的動力反應特性。
  5. Firstly, in the reproducing kernel space, the spline function is discussed and its equivalent relations are gived ; we prove that the 2 - th differential operator interpolation spline function in the space can be expressed not only by the reproducing kernels but also by polygonal functions. so it is easy to prove its best approximation properties in theory and is convenient for numerical calculation in applications, too

    首先，在再生核空間中討論樣條函數，給出其等價性條件；證明了空間中的一個二階微分運算元插值樣條既可由再生核函數表示又可由折線函數表示，這不僅在理論上便於獲得此種插值樣條函數的最佳逼近性質，而且在應用上也便於數值計算。
  6. The governing equations, the corresponding variational equations and equivalent constitutive equations with the numerical expressions of initial stress were developed and applied to the analysis of the deformation of a bar. the conclusions related to the influences of initial stress on the additional deformation, especially to the natural frequency and were obtained

    第四章在平截面假設下，用變分原理建立了包含初應力數值表徵在內的附加變形支配方程及相應的邊界條件、給出了廣義應力、廣義應變及等效本構方程，凸顯了初應力各數值表徵對附加變形的影響。
  7. Abstract : a numerical model for wave propagation in water of varying topography and current is proposed, and time - dependent wave mild - slope equation with a dissipation term and corresponding equivalent governing equations are presented. two different expressions of parabolic approximations for the case of the absence of current are also given and analyzed. examples of numerical simulation for wave transformation in large estuarine water areas are provided

    文摘:提出了水深與流場緩變水域波浪傳播數學模型水流中依賴時間變量並考慮能耗的波浪「緩坡方程」及其等價的控制方程組，分析比較了無水流情況此理論模型與其相應的兩種拋物型近似的差別，提供了長江口波浪變形數值模擬計算工程實例.實例表明，該模型能適應河口三角洲大范圍水域波浪傳播數值計算
  8. When a cluster of particles is immersed in a uniform electric field, the particles are coupled together due to the mutual interaction among them. this interaction causes the dipole moment of the cluster to be dependent upon the spatial arrangement and relative permittivity of the particles and upon the cluster size. in this work, we attempt to estimate the dipole moment of finite cubic arrays of particles, in terms of that of particle chains which has been known. we assume that a chain may be replaced by a single equivalent sphere with the same dipole moment. with replacing the chain by equivalent sphere, a cluster is simplified to a planar array, and this planar array is simplified to a chain, then the dipole moment is obtained. numerical calculations are performed. it is found that our results are acceptable

    置於均勻電場中的一簇球形顆粒，由於其內部的相互作用而耦合在一起.這致使簇的感應偶極矩與簇的幾何結構，大小以及顆粒的介電常數等參量有關.試圖通過已知的鏈的偶極矩確定任意大小長方結構的簇的偶極矩.假定顆粒鏈可以被具有同樣偶極矩的一個等效介質球代替，並將具有空間結構的顆粒簇處理成面結構簇，再將面結構簡化成一個顆粒鏈，從而確定簇的偶極矩.在這一過程中，通過不斷增加等效球的尺寸，將顆粒間的相互作用包含在簇的偶極矩中.數值分析了立方結構簇的偶極矩，結果是可接受的
  9. The material ways are to model the honeycomb wall as an impredence surface, to express the infinite honeycomb by using periodic green ' s function, and using method of moment to establish the mathematic model, in applying the methods of moments, we choose the roof function as basic function and choose the razor function as test function ; by equating the incident field to sum of the scattering field and impledance field ; we will set up the integral equation for the surface current, solving it by mom equation. then gain it ' s reflected coefficient ' s numerical result. and we propose first the definition of the equivalent electromagnetic parameters and present a method to calculate them from the gained reflection coefficient

    具體方法就是將浸漬吸收劑的蜂窩壁用表面阻抗表示，將無限大的周期結構的電場用周期格林函數來表示，選取有耗蜂窩結構中具有代表性的基本計算單元應用矩量法建立數學模型，在運用矩量法時用屋頂函數作為基函數，刀片函數作為檢驗函數，根據蜂窩壁表面電場必須滿足入射電場等於散射電場和阻抗電場之和的規律，推導表面電場積分方程，求解蜂窩結構的表面電流，利用蜂窩的周期規律得到無限大均勻周期陣列的散射電場。
  10. A mathematical model of flows in the substrate was established using the equivalent continuum approach, and multi - dimensional numerical simulation of the steady flows in the catalytic converters was performed. simulation results show that the separation and vortex, which cause the pressure loss and the velocity non - uniformity at the front of the first substrate, are generated near the wall of the conical pipe. in addition, the larger the inlet cones angle the more the pressure loss and maldistribution in converters, however, when the angle enlarges enough the pressure loss would be decrease

    結果顯示氣流在擴張圓錐管壁附近出現分離產生較強的擾動，造成局部流動損失和載體前氣流速度沿徑向分佈不均勻；入口擴張管結構對催化器的流動特性有很大影響，但並非擴張角越大，催化器流速武漢理工大學碩士學位論文分佈的不均勻性和壓力損失也增大，而是存在著一個最佳角度，但當擴張角增大到一定程度以後，擴張角對流速分佈和壓力損失的影響變小。
  11. Numerical simulation of equivalent elastic modulus for metal matrix nano - composite materials using homogenization method

    金屬基納米復合材料等效彈性模量的均勻化方法數值模擬
  12. In this paper, we study the numerical solutions of these problems using galerkin boundary element, especially for the problem with open boundary such as the problems exterior to an open segment or an open curve in the plane. since the equivalent boundary integral equation for two dimensional laplace equation has constraint condition

    因為把二維調和方程的邊值問題轉化為等價的邊界積分方程時帶有約束條件，用galerkin邊界元方法求解帶約束條件的變分方程，在數值離散時，我們採用lagrange乘子法處理約束條件。
  13. In the second part, we try to apply orthogonal polynomial approximations to the dynamical response problem of the duffing equation with random parameters under harmonic excitations. we first reduce the random duffing system into its non - linear deterministic equivalent one. then, using numerical method, we study the elementary non - linear phenomena in the system, such as saddle - node bifurcation, symmetry break bifurcation, phenomena in the system, such as saddle - node bifurcation, symmetry break bifurcation, period - doubling bifurcation and chaos

    本文第二部分嘗試將正交多項式逼近方法應用於隨機duffing系統，提出與之等價的確定性非線性系統的新概念，並用數值方法對該系統在諧和激勵下的鞍結分叉、對稱破裂分叉、倍周期分叉、和混沌等各種基本非線性響應進行了初步探討。
  14. Abstract : when a cluster of particles is immersed in a uniform electric field, the particles are coupled together due to the mutual interaction among them. this interaction causes the dipole moment of the cluster to be dependent upon the spatial arrangement and relative permittivity of the particles and upon the cluster size. in this work, we attempt to estimate the dipole moment of finite cubic arrays of particles, in terms of that of particle chains which has been known. we assume that a chain may be replaced by a single equivalent sphere with the same dipole moment. with replacing the chain by equivalent sphere, a cluster is simplified to a planar array, and this planar array is simplified to a chain, then the dipole moment is obtained. numerical calculations are performed. it is found that our results are acceptable

    文摘:置於均勻電場中的一簇球形顆粒，由於其內部的相互作用而耦合在一起.這致使簇的感應偶極矩與簇的幾何結構，大小以及顆粒的介電常數等參量有關.試圖通過已知的鏈的偶極矩確定任意大小長方結構的簇的偶極矩.假定顆粒鏈可以被具有同樣偶極矩的一個等效介質球代替，並將具有空間結構的顆粒簇處理成面結構簇，再將面結構簡化成一個顆粒鏈，從而確定簇的偶極矩.在這一過程中，通過不斷增加等效球的尺寸，將顆粒間的相互作用包含在簇的偶極矩中.數值分析了立方結構簇的偶極矩，結果是可接受的
  15. Taking a monotonic soilfill dam as example, a comparison between the incrementally - iterative numerical technique and the equivalent linearization approach was carried out

    以一理想均質土壩為算例，對上述增量?迭代演算法和常用的等價線性法得到的壩體動力計算結果進行了對比分析。
  16. Because of need of much iteration in each time step while carrying on nonlinear numerical anaiysis, the incremefltal equilibrium formulation and its equivalent iterative equation of the constant average acceleration newnark method are deduced

    鑒于橫縫非線性數值分析需要在每一時間步內迭代多次，推導了newmark常加速度增量平衡方程及其等效迭代格式。
  17. Executing the lifting method to the equivalent programming, we present a strengthened semidefmite relaxation. as predicted by theory and confirmed by numerical experiments the tight semidefinite relaxation gives a better lower bound of circuit bisection than the one that the previous semidefinite relaxation gives

    本文先通過增加非線性約束得到原始問題的等價模型，進而對等價模型利用提升技術，提出了一個強化的半定鬆弛模型；最後，將結果推廣到更具一般性的圖的分割問題。
  18. The numerical results show that the responses of the proposed approach are much close to the monte carlo solutions and that the time of calculation of equivalent random systems method is much less than that of the monte carlo

    從計算結果可以看出本文解和monte - carlo模擬解十分吻合，而且計算時間相比monte - carlo法少很多。本文提出的等效隨機系統分析法，原理清楚，方法簡單，算例的精度較高，有望在處理非線性隨機動力問題中得到較大發展。
  19. This paper analyses model and control system of upfc and tcsc, and respectively completes interface with network, upfc using equivalent load decoupled algorithm and tcsc using compensation algorithm. by programming software, transient stability computation for power system containing facts devices can is realized. the correctness and effectiveness are proved using numerical example in the modified epri - 36 bus system

    本文詳細分析了facts元件中upfc 、 tcsc的模型和控制系統， upfc採用等效負荷解耦演算法， tcsc採用補償法分別實現了與電力網路的介面，通過編制相關程序，實現了混合系統中含upfc 、 tcsc的暫態穩定計算，並以修改過的epri - 36節點系統為例，驗證了該演算法的正確性和合理性。
  20. The numerical optimization and the detailed exergy analysis of the cycles approved the conclusions rendered in the analysis of the cycle ' s features. we also obtained the optimum compositions of the mixture refrigerant for the rectification cycle under the pressure ratio of 8, at the temperature levels of - 60 ?, - 80 ?, - 100 * c, and - 120 ? respectively. the method of equivalent entropy generation is initially used in this study

    通過對混合工質節流製冷機諸循環進行的數值優化和較為詳盡的循環粗（火用）分析，驗證了循環的特性分析中所得到的主要結論，同時得到了壓比為8 ，溫度為- 60 、 - 80 、 - 100和- 120等四個溫度位的混合工質精餾循環最優混合工質成浙江人學博十學位論文摘要分。
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