阻尼周期 的英文怎麼說

中文拼音 [zǔnízhōuqī]
阻尼周期 英文
damping period
  • 阻 : 動詞（阻擋; 阻礙） block; hinder; impede; obstruct
  • 尼 : 名詞（尼姑） buddhist nun
  • 周 : Ⅰ名詞1 （圈子; 周圍） circumference; periphery; circuit 2 （星期） week 3 [電學] （周波的簡稱） c...
  • 期 : 期名詞[書面語]1. （一周年） a full year; anniversary 2. （一整月） a full month
  1. Thirdly, we consider the n - dimensional duffing type equation with damping term. by virtue of homeomorphism, extension and fixed point method, we discuss the existence of periodic solution under the nonresonance condition

    再次，我們考慮n維的帶有阻尼項的duffing型方程，運用同胚延拓及不動點方法，討論了非共振條件下周期解的存在性問題。
  2. Based on extensive investigation of construction technique history of chinese ancient buildings, the structure method, structure developing history and seismic behavior of chinese ancient timber structure buildings are analyzed in several respects of the structural system and form. through a series of experiments on constituent parts of chinese ancient timber building structure, including the tests on the corbels and brackets called dougong subjected to low cyclic reversed loadings, the tests on the wooden frame using the tenon - mortise joints as connections of column and beam subjected to low cyclic reversed loadings, the tests on vibration isolation effect of friction and slippage between column footing and their socle base, and a series of shaking table tests on a chinese ancient timber structure palace building mode under artificial earthquake at serving conditions, destroyed conditions and reinforced conditions, many valuable results of structures such as moment - curvature hysteretic loops of dougong structure and tenon - mortise joints under low cyckc reversed loadings, the static function, the seismic performance, energy dissipation, vibration reduction, energy - loss mechanism, nechanicalmode and failure mode were studied. aplenty of valuable parameters of the structure system were obtained, such as the natural period of structure, vibration modes, damping ratio, factor of vibration isolation, oscillate amplitude of ineitial accebration, velocity and displacement, magnitude of slippage, and the mechanism of structure failure and collapse etc. based on these research, the complete analysis of ancient timber structure under earthquake were carried out in which including mechanism analysis method, calculating mode, strength analysis of members and joints, strengthening methods for serving damaged ancient timber structure buildings were also taken into account

    依照宋代《營造法式》建造了抬梁式殿堂木結構構件及結構模型，對中國古代木結構中的典型構造如：柱腳在礎石頂面平擱簡支、柱架榫卯連接、柱高不越間之廣、側腳、生起、斗拱等的構造機理及結構功能進行了量化分析和實驗研究： （一）通過木柱石礎靜摩擦試驗，測定了柱腳與石礎古鏡面間的摩擦系數及摩擦力隨上部結構荷載變化的規律； （二）通過單柱承載力試驗，測定了古建築中木柱的受力變形特徵、破壞模式、及模型材料的變形模量、極限承載力、極限變形等參量； （三）通過柱架低周反復荷載試驗，測定了柱架的抗側移剛度、柱架恢復力特性及滯回曲線、榫卯張角剛度及其變化規律、柱架及榫卯的極限承載力和極限變形、及榫卯減振參數； （四）通過斗?低周反復荷載試驗和受壓試驗，測定了古建築木構件與木構件間摩擦系數，斗?抗側移剛度，斗?恢復力特性及滯回曲線，斗?抗壓極限承載力及受力變形規律； （五）通過抬梁式殿堂間架模型振動臺試驗，測定了殿堂木構架結構自振周期，地震反應振形、阻尼特性及阻尼比；按結構分層特點對柱腳、柱頭和斗?層上的屋蓋的地震反應採用多點同步測量，對柱根滑移、榫卯變形、斗?的變形、復位、耗能減振參數等進行了定量分析。
  3. On the basis of theoretic analysis and numeric calculation, the author verifies that only is the ratio of the fundamental period of the structure to the disturbance period beyond 1. 4, it ' s possible to achieve reductions in both the relative displacement and the absolute acceleration responses

    作者在此基礎上，從理論分析和數值計算兩方面證明了粘性變阻尼控制僅在結構周期與激勵主周期的比值大於1 4時才有可能同時減小結構的位移反應峰值和加速度反應峰值。
  4. Second part, using approximation method and implicit function theorem, we obtain the existence of large amplitude 2 - periodic bouncing for damped linear impact osillator with mutiple impacts in one period

    在第二部分里，我們運用逼近框架與隱函數定理，對于帶小阻尼的線性碰撞振子，證明了在一周期內發生多次碰撞的大振幅2 -周期解的存在性。
  5. To reproduce the narrow - band response, based on the thought of kanamori etc., the damping ratio and natural period are modified. through this adjustment, the narrow - band response can be reproduced, but for some natural periods the adjustive damping ratio has become negative. the negative damping is strange and can not be explained by the equation of motion for sdof system

    為了生成窄頻帶反應，本文根據kanamori等人的方法調整了計算時的阻尼比及自振周期，調整后的單邊差分方法能在共振區域生成很好的窄頻帶反應，但是對一些周期點的阻尼比調整成為了負值，這從系統的動力平衡方程是難以解釋的。
  6. Simulation and experimental results show that the complete damped algorithm with a fuzzy controller can damp most schuler and foucault oscillations, and efficiently improves precision of strapdown ahrs

    模擬和試驗證明：模糊全阻尼演算法明顯抑制了舒拉周期振蕩和傅科周期振蕩，有效地提高了捷聯航姿系統的精度。
  7. The dynamics behaviors of the flexible jeffcott rotor system supported by unsteady short dynamic bearing are investigated. based on nonlinear unsteady - state dynamic n - oil film force model described by three functions the local stability of the periodic solutions with the controlling parameters, rotational speed ratio, imbalance amount, damping ratio and viscidity, are predicted by using the floquet multiplier. it is found that the period doubling bifurcation is caused by a certain imbalance amount and the hopf bifurcation is created by the lost stability of the oil - film

    研究了非穩態動載短軸承支撐的jeffcott柔性轉子系統的動力特性，基於可用三個函數表示動態油膜的非穩態非線性油膜力模型，將轉速比、不平衡量、阻尼比、粘度作為控制參數，利用floquet乘子預測周期解的局部穩定性，發現倍周期分叉是由一定量的不平衡引起的，而hopf分叉是由油膜失穩造成的。
  8. Damped periodic instrument

    阻尼周期儀表
  9. Drawed into the idea of the damped algorithm of inertial navigation system ( ins ), this paper designs a three - order level damped net in the level loops of strapdown ahrs and uses the velocities to obstruct the oscillations

    本文將傳統的平臺內阻尼的思想引入到捷聯慣性航姿系統中，通過設計水平迴路中的三階內阻尼網路，利用系統本身的速度信息來阻尼周期振蕩。
  10. Base isolation technology is one of the most efficient method for seisin resistant. by putting the isolation system between the top - structure and the base, it can enhance the damp of the building, prolong the periods, decrease acceleration response when the building was under earthquake

    基礎隔震是新型抗震主要手段之一，它是在建築物與其基礎之間，墊上隔震系統，來延長結構周期，給予結構適當的阻尼，使結構的加速度反應大大減弱，讓結構的大位移主要由結構物底部與基礎之間的隔震系統提供。
  11. It is well known that end - plate connections have definite flexibility, which can increase damp, prolong period, and decease swing of structure. so it can reduce the damage, and is one of the best choices for resisting earthquake

    端板連接是一種具有一定柔性的連接形式，當框架結構採用這種節點時，可以增加結構的阻尼，延長結構自振周期，減小震幅，從而降低震害，是抗震的理想選擇之一。
  12. The meaning of cqc ( t ) algorithm is the difference in time domain between the peak value location in time axis of input earthquake and model response of structure, which is called delay time. through the delay time calculating of a series of oscillators with different damp ratio and natural vibration frequency, it is found that it will bring biggish error if the cqc algorithm applied on the structure which has long period, and the time dependent cqc ( t ) algorithm could solve the problem easily

    Cqc （ t ）方法的意義在於輸入地震動峰值與結構模態響應峰值在時間軸上的時間差，我們稱之為延遲時間，通過計算具有不同周期和阻尼比結構的延遲時間，發現對于自振周期比較長的結構， cqc方法會帶來比較大的誤差，而基於時程的cqc （ t ）方法能夠解決這個問題。
  13. Traditional inertial mechanized - platform uses velocities to damp the system attitude to improve the precision of attitude, when the system acceleration is small. referring to the idea, this paper designeda damp kalman filter in strap - down attitude heading reference system ( ahrs ). the new method makes use of 3 - d accelerometer ' s measurements to estimate the system attitude, which is measured to compensate attitude errors. because the acceleration affected the precision of fiher directly, the fuzzy adaptive system was presented. the fuzzy logic inputs are three accelerations and the output is to control the measurement noise covariance matrix. simulations and experimental results prove that the damp algorithm can damp most of schuler oscillation and foucauh oscillation, so that to assure the filter convergence and efficiently improve the precision of strap - down ahrs

    在系統機動性不強的情況下，傳統的平臺內阻尼演算法將系統本身的速度信息通過阻尼網路加到系統中，達到提高姿態角精度的目的.將這種平臺內阻尼的思想引入到捷聯慣性航姿系統中，在系統加速度較小的情況下，利用加速度計的輸出估計系統姿態角，通過卡爾曼濾波的形式補償系統姿態誤差.由於加速度的大小直接影響濾波器精度，本文設計了模糊自適應卡爾曼濾波演算法，根據三軸加速度計的輸出調整內阻尼量測誤差方差陣，從而避免了濾波器的發散.模擬和實驗驗證，內阻尼演算法可明顯抑制舒勒周期振蕩和傅科周期振蕩，避免了系統姿態漂移，有效提高了捷聯慣性航姿系統的精度
  14. As a result the use of semiactive dampers in structures is positively only in some special cases when compared to passive systems

    只有在結構周期與激勵主周期的輸入比值滿足一定條件的情況下，粘性變阻尼控制才有意義。
  15. When the axial loads on piles are not considered, contrast with the considered one, the first and the second natural periods are mainly effected, from which conclusions can be drawn that the axial loads affection is obvious to the construction system considering relaigh damp

    通過計算分析發現，考慮軸力的樁基礎阻抗主要影響前兩個周期，當採用relaigh阻尼的結構體系計算時考慮樁基礎軸力明顯影響交錯析架體系的動力特性。
  16. In the theoretical analysis, first the dynamics model of the prepressing - contact spring - damping system was established by vibration theory. then the stability of the solution of this system was studied base on the qualitative theory of nonlinear vibration

    在理論分析方面，首先根據振動理論建立預緊接觸式彈簧阻尼系統的力學模型，然後利用非線性振動的定性理論研究系統周期解的穩定性。
  17. It is discussed that the load period, the damp ratio of pavement, the temperature of asphalt concrete, the resilient modulus of semi - rigid base, the material parameters and thickness of the composite foundation have influence on the vertical displacement, the radial stress of the base bottom and the sub - base bottom

    具體探討了荷載周期、道路結構體的阻尼比、瀝青混凝土的溫度、半剛性基層的回彈模量、復合地基的材料參數和厚度對特徵點的豎向位移、基層和底基層層底徑向應力的影響。
  18. Via researches symans and sadek pointed out that for flexible structures ( structures with periods beyond 1. 5s ) such a semiactive control system can be effective in reducing both the relative displacement and the absolute acceleration, whereas for rigid structures ( structures with periods below 1. 5s ) it is doubtful

    Symans和sadek等人通過研究指出，對于柔性結構（周期在1 . 5s以上）變阻尼控制可以同時減小結構的位移反應和加速度反應；相反對于剛性結構（周期在1 ss以下）其效果如何則是值得懷疑的。
  19. In this paper, we study the periodic solutions of the impact oscillator with damping. first part, using continuation lemma and approximation method, we prove the existence of 2 - periodic admissible solutions for a class of second order bouncing differencial equations with damping

    在第一部分里，我們運用延拓引理與逼近框架，對於一類帶阻尼的二階碰撞方程，證明了2 -周期碰撞允許（ admissible ）解的存在性。
  20. Simulations and experimental results prove that the fuzzy damped algorithm can control schuler and foucault oscillations, and improve the precision of the strapdown ahrs

    模擬和實驗證明，模糊內阻尼演算法明顯抑制了舒勒周期振蕩和傅科周期振蕩，有效提高了捷聯慣性航姿系統精度。
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