迭加原理 的英文怎麼說
中文拼音 [diějiāyuánlǐ]
迭加原理
英文
principle of superposition-
In the process of solving, poles are obtained from recurrent formula, modal vector are obtained from superposition formula not residuary. decoupled equation is derived when vibration source is part correlation, severely coupling appears in the process of input and output then frequency response function cannot directly get according to method mentioned above, decoupling is first problem
當輸入完全相關時，頻響函數無解，可繞過頻響函數，直接運用線性系統的迭加原理來求響應，極點由遞歸公式得出，模態矢量由疊加公式求出，而不是由留數求得的相應的公式。The principle of superposition does not apply to nonlinear systems
迭加原理不適用於非線性系統。The first - order perturbation method correct for forcing decoupling method based on perturbation theory is put forward to decrease error ; iii. the complex modal method is introduced into analysis of non - classical damping systems to eliminate error of forcing decoupling method, and improve the complex modal response spectrum, which can apply to design of non - classical damping systems ; iv. for exerting the energy dissipation capability of each device, a two - step optimum method, whose controlling function is extremum expectation of interbedded displacement, is put forward to optimize the number and position of device ; v. the problem of iterative method applied to analyze energy dissipation systems is indicate, and give some primary advice based on pilot study
為改善上述缺點，本文進行了以下的研究工作：在忽略耗能器附加質量的基礎上，推導出適用於耗能減震結構的攝動法，減少振型分解法在迭代計算過程中的工作量，加快計算速度；針對運動方程的強行解耦所產生的誤差，根據攝動法原理，對其進行一階攝動修正；為消除強行解耦振型分解法用於非比例阻尼結構分析時產生的誤差，引入狀態空間對系統進行復模態分析，並改進了基於復模態理論的、適用於非比例阻尼結構設計的雙反應譜方法；對于耗能器的數量和位置優化進行了一些探討和研究。An optimizing arithmetic for calculating the best - fit sphere is also proposed, the result shows better accuracy is reached comparing to " three points method ", from 107. 8umrms to 25. 66umrms. during interferometric optics test with null lens, " nonlinear errors " of the testing coordinates will be introduced. a method based on ray - tracing, nonlinear fitting and coordinate transferring is proposed to eliminate these errors
在ccos控制模型及理論計算方面，提出了一種適用於高次離軸非球面最接近球面計算的優化演算法，經計算，某矩形離軸非球面最接近球面半徑的求解精度較傳統的「三點法」有了較大的提高，理論加工余量由原來的107 . 8umrms降低到25 . 66umrms ；提出一種基於磨頭與工件的相對位移量的控制模型，並且開發了阻尼卷積迭代演算法，引入「虛擬加工」的概念進行迭代求解和參數評價。Principle of superposition
迭加原理In the electromagnetics teaching materials, the most basic solution method of the electrostatic field is the electric field principle of superposition. this method is employed widely, but regarding some complex boundary - value question, it only obtains the formal solution
在通常的電磁學教材中，最基本平面場的求解方法是電場迭加原理，這種方法雖然應用廣泛，但對於一些復雜的邊值問題，求得的只是形式解。This paper proposes a novel method for reactive power pricing. the superposition theorem is used to calculate the contributions of individual generators to loads in a given status and the active and reactive power price of loads is determined by cost apportioning
該方法在某一的潮流運行點下，對電網進行等效，利用迭加原理，分別計算此時各電源對負荷的電流貢獻，然後再求得其對負荷的功率貢獻，最後依據成本分攤進行電價計算。Based on the linear creep superposition principle, admiting average loading age coefficient and average time - lasting coefficient, adopting creep and shrinkage calcultion in aci code, a simplified method of creep and shrinkage analysis in reinforced concrete member bearing multi - times axial forces is presented
摘要根據線性徐變的迭加原理，引入平均齡期影響系數和平均持荷影響系數，利用aci規范中的徐變和收縮計算公式，推導了鋼筋混凝土軸壓構件分批加載時收縮徐變分析的簡化計算方法。According to the basis relation of stress, strain and the value of limit deformation during the strengthening of concrete architecture, the derivate computing method is applied under different state of load and internal force. and it is towards difference of stress and strain of the new and old part of the strengthening structure. it is pointed out that unloading is the necessary and important method of taking advantage of effect of the strengthening structure
本文根據混凝土結構加固中材料的基本應力? ?應變關系和極限變形值，針對加固結構新舊兩部分的應力、應變差，應用迭加原理，導出了加固結構在不同受力狀態下的承載力和內力適用設計計算方法，指出了「卸荷」是充分發揮加固結構效能的必不可少的重要手段。Focusing on the problem of sound field of scattering due to the existence of tubes, the general mathematical model modeled according the condition of plant, and then the coefficient of sound scattering is resolved by using the method of inverse matrix, the functions of arbitrary configuration of tubes is got, the far field scattered pressure and near field scattered intensity of the unit of heat exchanger tubes is calculated, at last, the effect of soot cleaning due to the existence is analyzed
論文根據爐內管束的實際情況，建立換熱器管束聲波散射的通用數學模型，利用迭加原理法求解模型中的待定散射作用系數，得出任意布置管束的散射聲場特性，並具體計算鍋爐換熱器管束單元聲波散射遠場聲壓分佈和近場壁面的聲強分佈，最後分析由於聲波的多重散射作用而對聲波吹灰的影響。It is achieved the common work of pile - soil - structure on nsas by using nonlinear bars from single pile calculation as the structure boundaries. the results show that under some 3 - d loading conditions, significant error can be induced due to the nonlinear characteristic of pile, simply using a nonlinear spring from single pile calculation as the structure boundaries
在三維受力狀態下，由於樁周土的非線性，迭加原理不再適合，而目前許多有限元程序只是簡單地把單樁計算得到樁頭等效非線性彈簧作為結構的邊界條件，這樣將導致出現比較大的偏差。Our numerical results show that the accelerated subspace iteration method by using chebyshev polynomials and the preconditioning subspace iteration method are superior to the original subspace iteration method
數值試驗結果表明用chebyshev多項式與預處理技術加速的子空間迭代法比原始子空間迭代法優越。Beginning with the equivalence principal, two types of near - field to far - field ( nfff ) transformation s are discussed systematically, i. e. frequency - domain nfff ( fd - nfff ) and time - domain nfff ( td - nfff ). in td - nfff transformation, the concurrent - processing approach is used, where the contributions to far - field from the tangential electric current and magnetic current on the equivalence surface are calculated " on - the - fly " in step with the fdtd simulation. as a result, it is not necessary to store the tangential current components for every equivalence surface at every time step, and therefore reduce considerably computer storage required for the td - nfff transformation
在理論部分，本文從電磁場的等效原理出發，系統、詳盡地論述了頻域和時域近遠場變換的基本思想，在時域近遠場變換中採用實時的變換方法，即每進行一個時間步的迭代，就計算一次等效面上該時間步的切向電流和切向磁流對遠場各方向的貢獻，這樣就使時域近遠場變換不需要儲存等效面上每一個時間步的切向電流和切向磁流，大大減小由於近遠場變換而增加的計算機內存需要量。This paper deals with the existence of two positive solutions for critical elliptic equations with a changed sign perturbation and with an auxiliary condition. first of all, the super - sub - solution can be obtained by this positive solution and by the auxiliary condition if perturbation is the positive side of the changed sign perturbation, and then the equation has a positive solution by the method of monotone in teraction and by the maximum principle. because that the positive solution of the equation isnt monotone to parameter. although all of the equations have a positive solution to two given parameters, the existence of the positive solutions of its equation to a parameter between the two given parameters cant be proved. finally, if the first positive solution exits the second solution for the equation can be proved by the mountain pass lemma. 7refs
討論了帶變號擾動並且具有一定附加條件的臨界橢圓方程的兩個正解存在性.首先由變號擾動的正部對應的方程的正解和附加條件構造出原方程的一個上、下解，再由迭代方法和極值原理得到方程的第一個正解.考慮到方程的正解對參數沒有單調性，因此，即使對于兩個使得方程都有正解的參數，但在這兩個參數之間的參數對應的方程不一定有正解.最後，如果方程存在第一個正解，那麼由山路引理可得到方程的另一個正解.參7分享友人