阻尼比 的英文怎麼說

中文拼音 [zǔníbǐ]
阻尼比 英文
damping deflection period
  • 阻 : 動詞（阻擋; 阻礙） block; hinder; impede; obstruct
  • 尼 : 名詞（尼姑） buddhist nun
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  1. The method proposed in this thesis do well in solving the problems of multi - damping - ratio - spectra simulation. it is convenient to obtain the pareto optimal solution set of the multi - object question by using implicit parallel genetic algorithms and the method can meet the practical needs for simulating ground motions coinciding with multi - damping - ratio - spectra in seismic design. the crossing rate and variance rate are important parameters of genetic algorithms which affect the rate of convergence, the adapting rate of cross and variation in this paper can auto - adapt and according to stand or fall of current sample, it assures the sample approach to the pareto optimal solution set in fast convergent speed

    較好地解決多阻尼比反應譜擬合問題；本文方法通過一次運行就能獲得一組具有集系特性的地震動，在擬合多阻尼比反應譜的人造地震波集系的模擬方面有傳統方法所不能比擬的優勢，產生的人造波或人造波集系可滿足工程抗震設計需要；在遺傳演算法中，交叉概率和變異概率是影響收斂速度的重要參數，本文採用的改進自適應交叉概率和變異概率，可以根據當前樣本的好壞程度來自動地選擇適當的交叉概率和變異概率，以保證演算法始終以較好的速度向pareto最優解集逼近。
  2. Mode is structure ’ s inherence characteristics, each mode has specifically resonant frequencies, damping values, mode shapes, mode stiffness and mode mass

    模態是結構的固有振動特性，每一階模態都具有特定的固有頻率、阻尼比、振型、模態剛度和模態質量。
  3. The result of optimization and analysis show : 1 ) across - axis sensitivity is smaller, less than 2 % of the primary axis sensitivity ; 2 ) the first mode is dominant at primary axis, which reduce intersectional coupling ; 3 ) when damp ratio is between 0. 3 and 0. 7, accelerometer has better dynamic characteristic

    分析結果表明此種結構的具有： 1 ）橫向靈敏度小， x 、 z方向的橫向靈敏度均不到敏感方向的2 ； 2 ）在敏感方向上，一階模態起主導作用，其它模態的影響較小，有利於減小交叉耦合的影響； 3 ）當阻尼比毛為0 . 3 ? 0 . 7時，傳感器具有較好的動態特性。
  4. A new damping estimation method, the secant line method, was presented, that is based on the distance of neighbor peaks and valley of oscillation

    摘要提出利用相鄰波峰和波谷之間距離估計阻尼比的割線方法。
  5. 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。
  6. The relationships of modal damping versus the stiffness of cables, the attachment height of damper and damping constant are obtained. with the optimal structural control method, a new approach to determine the optimal damping constant of viscous damper is presented. the first a few modal damping can be optimized simultaneously under the optimal damping constant of damper, which is more convenient than the existed design method

    4 、對拉索-粘性阻尼器系統的動力特性進行了研究，得到了拉索剛度、阻尼器安裝高度及阻尼系數等參數對拉索系統模態阻尼比的影響規律；根據最優控制原理，提出了一種確定阻尼器優化阻尼系數的方法，該方法確定的阻尼系數能保摘要證前幾階模態阻尼比得到整體優化，改進了現有的設計方法。
  7. The records we used are mainly from three parts : strong ground motion data before 1992 ' s ; data from scec ( south california earthquake catalog ) ; nsmp ( national strong motion project ). after we developed the attenuation laws, we analysis the attenuation characteristics for the pga and sa with different damping ratio. here we mainly concentrate on the effect of the distance and the magnitude

    在回歸出中小地震的衰減關系后，本文對峰值加速度（水平向與垂向） 、加速度反應譜（阻尼比分別為0 . 005 、 0 . 02 、 0 . 05 、 0 . 1 、 0 . 2 ）的衰減特性進行了分析，影響因素主要考慮了震級與距離這兩個方面。
  8. This method is especially accurate in damping identification with the relative error less than 1 % to theoretic values

    尤其在阻尼比的識別上，相對誤差在1 %以下。
  9. The research results show that transducer partially debonding results in clear change of instantaneous frequencies, mode frequencies and damping ratio of the structures

    研究結果表明，傳感器局部開膠對結構的瞬時頻率和模態頻率以及阻尼比均有明顯的影響。
  10. Then a simplified computational modal of damping isolation systems is established for a platform structure, and the relationships between the parameters of isolation layer and structural damping ratio, including their vibration - suppressed effect on the whole structure and the relative displacement of isolation layer are studied, and the simulation analysis under several representative load case of random wave force and earthquake affairs is performed. under random wave force, using complex mode theories, non - classically damp problems considering the interaction between the structure and wave, lying in deepwater, are studied. and the resolution solution of structural response are achieved. the results of calculating and analysing show that adding damping isolation to a jacket is an effective way to reduce vibration for offshore platforms

    針對某一典型平臺結構，建立了海洋平臺結構阻尼隔振體系簡化計算模型，進行了波浪荷載工況和地震工況的數值模擬，研究了隔振參數與結構阻尼比的關系以及它們對結構整體和隔振層層間相對位移的控制效果，運用復模態理論研究了位於較深水位的固定式導管架海洋平臺在隨機波浪力作用下考慮結構與波浪相互作用時運動方程中非經典阻尼的解耦問題，獲得了結構響應的解析解。
  11. 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。
  12. 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。
  13. Taking the bending stiffness, cable sag and cable inclination into consideration, the space vibration control of the cables using the visco - elastic dampers in cable - stayed bridges is investigated by joining the center difference method and the state space strategy. both the maximum modal damping ration and the optimal damper size are obtained, then the practical suggestions are proposed for the design of the dampers. the space nonlinear vibration equations of the cable - damper system are derived, and a new hybrid method for solving the cable - damper system is presented by combing the newmark method and pseudo - force technology

    綜合考慮了拉索抗彎剛度、垂度的影響，研究了粘彈性阻尼器對斜拉橋拉索的空間振動控制，聯合中心差分方法及狀態空間法，得出了拉索麵內、外振動各階模態可能達到的最大阻尼比及相應的最優阻尼器系數，並對斜拉橋拉索的阻尼器設計提出了參考建議：考慮拉索抗彎剛度、垂度及幾何非線性，導出了索-阻尼器系統的空間振動非線性方程組，結合newmark方法及偽力（ pseudo - force ）方法，創新地提出了求解非線性方程組的雜交方法，根據拉索-阻尼器系統的阻尼特性，在各種荷載作用下，對索-阻尼器系統的非線性瞬態振動響應進行了研究，從系統響應的角度更加直接地驗證了阻尼器的控制效果。
  14. On this basis, the further research of anti - seismic of buckling restrained braced frame is performed. derive additional damping and influence of buckling restrained brace to column axis strength. example proved, as to concentrically braced frame, buckling restrained braced frame has better anti - seismic performance

    在此基礎上，將此種支撐應用於框架中，對防屈曲支撐框架的抗震性能作了進一步的研究，推導了防屈曲支撐的附加阻尼比以及防屈曲支撐對柱附加軸力的影響，並且通過對一個算例進行非線性時程分析驗證了相對于普通中心支撐框架，防屈曲支撐框架具有更好的抗震性能。
  15. 4. based on energy equivalence and power equivalence method separately, the additional damping ratio formula of nonlinear viscous damper is derived and it ' s suggested power equivalence method is more suitable for nonlinear viscous damper. then the transforming equality between actual and spectra velocity of structure is derived, based on which, the additional damping ratio equation is revised

    4 、分別採用能量等效方法和功率等效方法，推導了非線性粘滯阻尼器的附加阻尼比公式，指出功率等效法更適合於非線性阻尼器；推導了結構的實際速度和譜速度之間的轉換公式，基於該轉換公式修正了功率等效方法下的附加阻尼比計算公式。
  16. Finally, application of adams in the simulation analysis of the electromagnet damping system is based on velocity feedback. the result of the simulation is indicated that : the vibration effect of low frequency and resonance peak is decreased with increment of damping ratio, and the high frequency performance is not affected

    最後採用adams對電磁阻尼隔振系統進行了振動模擬分析，模擬結果表明，合理設置阻尼比，能夠有效抑制諧振峰值，大幅度提高低頻隔振效果，並且對隔振平臺諧振頻率和高頻性能影響很小。
  17. Considering effect of damping ratio and frequency ratio to vertical amplitude of block foundation under dynamic action, this paper adopts calculating mode of mass - spring - damper and mass - spring to make account and analysis on the assumption of damping ratio and frequency ratio, then provides the range of damping ratio and frequency ratio by using two modes to calculate vertical amplitude of block foundation under dynamic action

    摘要考慮阻尼比和頻比對動力作用下塊體式基礎豎向振幅計算的影響，對質彈阻計算模式和質彈計算模式在設定的阻尼比和頻比下進行計算分析，提出了在採用2種模式動力作用下塊體式基礎豎向振幅計算時的阻尼比和頻比范圍。
  18. In practical application, the m10 180 bolts, which are installed in the head cover of the torque divider of ts5560 special automobile, sometimes fracture all of a sudden. according to the tests of acceleration, stress and strain, and the exciting test, it is resonance vibration that leads to the compound - bending fatigue fracture of the bolts. the exciting force caused by drive system, transmitted through the torque divider, produces a 1000 - 1500hz cyclical excitation at the junction of the bolts and head cover, which causes the first order bending resonance vibration of the bolts

    通過加速度、應力應變測試實驗和激振試驗的研究，發現ts5560特種車分動器取力器氣缸端蓋m10 180螺栓斷裂問題是由於共振引起的雙向彎曲疲勞斷裂：傳動系統工作所產生的激勵，經過分動器結構的傳遞（特別是分動器一階扭轉模態的放大） ，在螺栓的連接處產生1000 1500hz的振動激勵，其導致螺栓一階彎曲共振，在螺栓一階彎曲模態的阻尼比較小的情況下，使得螺栓產生較大的共振響應，導致螺紋處的彎曲動應力較大，疲勞壽命較低。
  19. In the same model, damping energy of structure and its proportion of total energy are almost linearly increased with the increase of damping ratio, and hysteretic energy of structure and its proportion of total energy are accordingly decreased. for the same damping ratio, damping energy and hysteretic energy vary 15 % to 35 % to the input energy in different models

    在同一模型中，結構的阻尼耗能及其在總耗能中所佔的比例隨著阻尼比的增大近似線性的增加，結構滯回耗能及其在總耗能中所佔的比例則相應減少；對于同一阻尼比，不同的計算模型中，阻尼耗能及滯回耗能所佔總輸入能的百分比中，相差的幅度可達15 35 。
  20. With the aid of the method for determining damping ratio in structural dynamic experiment the so called stationarity index is used to estimate the gentleness of the peak ’ s slope

    文中藉助結構動力試驗中阻尼比的確定方法，提出用平穩度指數來評價單峰點包線函數平緩程度。
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