風振系數 的英文怎麼說

中文拼音 [fēngzhènxìshǔ]
風振系數 英文
wind fluttering factor
  • 風 : Ⅰ名詞1 （空氣流動） wind 2 （風氣; 風俗） practice; atmosphere; custom 3 （景象） scene; view 4 ...
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. Choose two nodes on the edge of the structural to compare the results calculating by the finite element program midas, then we can draw a conclusion that these kinds of space truss systems is sensitive to the libration of the dynamic wind loads. to consider this factor is very necessary in the process of design, we will use the pulsant augmentation coefficient to realize it

    比較靜力風荷載和動力風荷載作用下的有限元軟體的計算結果，選取結構邊緣部分的兩個節點，對比它們在兩種方法計算下的最大位移的計算結果。經過比較可以看出重量輕、頻率低、阻尼小的柔性建築物對風荷載的橫向振動是很敏感的，在進行工程設計時應該考慮這種因素，並可採用乘以風振系數等相應方法來加以體現。
  2. As 4ws system is a typical system with stochastic perturbations, which are from the road surface unevenness and side wind and ca n ' t be described by deterministic function, the probability and statistics theory must be used in such research

    由於汽車四輪轉向系統是典型的一個存在隨機擾動的系統，振源主要就是路面的不平度和地面的側風，這類擾動不能用確定性的時間或空間函數去描述，只能用概率統計的方法去研究。
  3. In practice, the dithering of non - contact life - parameter detection system made by our group is produced because of the environmental factors such as wind, vibration, motion and so on. the amplitude of the dithering signal is stronger than that of the life - parameter signal, which makes it difficult to extract the life - parameter signal

    第四軍醫大學碩士學位論文本課題組研製的非接觸生命參數檢測系統實際工作時，由於外圍環境的干擾（風、振動、移動等）可以導致檢測系統產生抖動，這種抖動信號的幅度大於人體的生命參數信號，甚至導致檢測系統無法檢測出人體的生命參數信號。
  4. The result of the experiment shows that the proposed forced vibration method device has the quality of stability and repetitiveness of the data, the wide range of the testable reduced velocity, the exactness of coupled and direct flutter derivatives. and it does not need to employ any complicated identification system to check it further

    結果顯示：本文提出的強迫振動法裝置具有試驗數據穩定、數據重復性好、可測量的折減風速范圍寬、交叉項導數與對角項導數具有同等精度和不需要復雜的系統識別過程等一系列優點。
  5. Abstract : based on thestatic wind force factors of a tower and on the root - mean - square of the buffetingdisplacement responses of the tower top, which are measured by wind tunnel tests inlaminar and turbulent field respectively, the static and buffeting internal forces of thetower bottom control sections under its design wind speed are obtained by linearsuperposition method and fem

    文摘:基於均勻流和紊流風場中的橋塔模型風洞試驗所測得的橋塔空氣力靜力系數及塔頂抖振響應的位移均方根，採用線性疊加法及有限元法反演，給出設計風速下塔底控制截面的順風向靜風及抖振內力。
  6. Hangzhou grand theater ' s main part is 170m long and 136m wide, and the surface of it is consisted of ellipsoidal surface roof and conical surface gladding. based on wind tunnel test and theoretical analysis, the vibration mechanism, vibration shape, dynamic response and wind load factor of long - span combined structure consisted of ellipsoidal surface roof and conical surface gladding subjected to wind excitation are analyzed systematically in this dissertation, and some valuable results are obtained

    本文採用風洞模型試驗和計算機數值計算相結合的方法，對杭州大劇院大跨度橢球屋蓋和倒圓錐面幕墻組合結構的風振機理、風振形態、風振響應以及風振系數進行了較系統的研究，取得了有意義的結論。
  7. Furthermore, the isoline maps of mean wind pressure coefficients and rms wind pressure coefficients of the structure under various wind directions are plotted. in the matter of theoretical analysis, modeling with finite element method, using the local mean wind pressure coefficients and time history of fluctuating pressures determined in wind tunnel, the wind - induced dynamic responses for long - span grid roof structures are calculated in frequency domain and time domain separately

    在理論分析方面，建立合理的有限元模型，利用剛性模型風洞試驗獲得的各種不同情況下屋面各節點的平均風壓系數和脈動風壓時程，在頻域內和時域內進行了大跨網架屋蓋結構的風振響應分析。
  8. According to the fluctuating property of wind, on the stochastic vibration finite element theory, some calculation formulas of the response, including the along - wind response and the across - wind response, are obtained, the ideology of the torsion vibration in the double - tower structure and the ideology of the double - tower structure ' s dynamical wind load are also put forward at the same time. by using the stochastic vibration module of the general finite element program, the paper analyses the performance of the wind resistance more deeply and fully, discussing the influence on the double - tower structure from the diversification of the different component. the variance law of dynamic displacement and wind - induced vibration coefficient is derived through analyzing structure stochastic vibration, so is the effect of several parameters on dynamic displacement, acceleration and wind - induced vibration coefficient

    從結構風振的基本理論出發，通過對脈動風功率譜的分析，推導了結構風振響應（順、橫風向）的計算公式，同時提出了雙塔結構的扭轉振動和動力風荷載計算的思想，在結合通用有限元程序的隨機振動模塊的情況下，對雙塔結構的抗風性能作了深入、全面研究，探討了雙塔結構構件截面的變化對其抗風性能的影響，同時探討了順風向風速譜的選取、風速、參與計算的振型數、風與結構耦合作用是否考慮等因素對分析結果的影響，比較了規范風振系數的計算與隨機演算法結構的異同，並討論了原因，得出一些有意義的結論。
  9. Finally displacement wind load factor and inner force wind load factor are calculated and compared. the applicability of them is offered for design reference, based on the analysis of the difference between their values

    通過對位移風振系數和內力風振系數的計算和比較，分析兩者對于大跨異型結構表面風荷載計算的適用型，以供設計參考。
  10. A mathematical model is developed to comprehensively describe and analysis the vibration of over - head transmission lines according to pertinent datum. based on the model ， an optimum solution about the conductor - damper system is put forward to by means of the analysis of possible anti - vibration designs. a method of balance - energy is used to acquire the frequency - respondence features of the conductor - damper system under the function of breeze ; a cad software is presented and developed in terms of above approaches. the model applied in the thesis is comprehensible and considerate, and the results from the model are close to the data from experimental site. beside these, favourable interactive operational capability makes it possess more practical and economic value

    通過分析有關資料，建立了普通檔距導線微風振動系統的防振數學模型，並在該數學模型的基礎上，對防振結果進行了優化分析，得到了防振系統的解，用能量平衡原理，得到系統在微風作用下的頻響特性；採用這種方法設計了普通檔距防振的計算機輔助分析軟體。所採用的分析方法對微風振動的影響因素考慮全面，所求結果與現場實驗觀測中的數據比較接近，且人機交互操作性能良好，有一定的工程實用價值
  11. Research of the coefficient of wind - induced vibration about complicated tall buildings

    基於復雜外型建築物的風振系數
  12. The parameter analysis is done and the structural response factor is provided

    進行參數分析，並總結了結構響應的風振系數。
  13. Wind fluttering factor

    風振系數16
  14. Displacement dynamic responses, acceleration dynamic responses and wind direction influence on them are discussed in the time - domain and the frequency - domain

    採用時程分析法研究了該復雜結構的風振響應、風振系數及其與風向角的關系。
  15. Yasushi u, keisuke w, akihiro s, motohiko y, takeshi h. wind - induced dynamic response and resultant load estimation of a circular flat roof [ j ]. journal of wind engineering and industrial aerodynamic 83 ( 1999 ) 251 - 261

    樓文娟，孫炳楠，陸鋒，裘濤.大跨度平屋面結構的風振響應和風振系數.第十屆全國結構風工程會議論文集， 2001 . 11 ，桂林， 303 - 308
  16. The coefficient of wind - induced vibration is a link between the dynamic wind loads and the equivalent static loads and it is a key item in wind - resistant design. the further study on the coefficient of wind - induced vibration is carried out

    風振系數是聯系動力荷載與等效靜力荷載的橋梁，在抗風設計中起著關鍵的作用，對它的可靠性作了進一步的研究。
  17. The rules obtained from the background modal analysis method based on the quasi - steady assumption in frequency - domain are similar to those obtained by the analysis method in time - domain, and the influence of high modes can be considered. finally, the dissertation suggests that for engineering design, it is better to use equivalent wind load factor defined the ratio of wind - induced total displacement to static displacement for computing the equivalent static wind load of long - span grid roof structures, and the equivalent wind load factor of the roof of taizhou stadium is calculated

    最後通過對大跨網架屋蓋結構的風振系數的研究，提出了在實際工程設計中，採用位移風振系數來計算大跨屋蓋的等效靜力風荷載既正確又方便使用，並且給出了臺州體育中心看臺屋蓋進行分塊統計后的位移風振系數，以供設計參考。
  18. Static coefficients are defined to describe the static effect of wind on bridge, and the aerodynamic derivatives are used to describe the aerodynamic effect

    靜力三分力系數用於描述風對橋梁的靜力作用，氣動導數是顫振和抖振分析方法的核心。
  19. In this paper the author first analysed the wind effects on bridges, and wind - induced vibration is described in particular. second, two methods for wind effects on bridges are discussed, which include the method of gust response factors and the method of buffeting response spectrum. thirdly, from the requirement of practical engineering, the accurate analysis method is simplified according through the parametric analysis, the formula for engineering application of the second method is presented. finally, a realengineering example illustrate the usage of the two methods. and the result of the engineering example show that the stress calculated by buffeting response spectrum method is larger than which calculated from the gust response factor methed, also the temporary method of wind resistant ways for bridge in cantilever state is presented

    第二，分析了橋梁抗風分析的兩種方法，包括基於陣風系數的陣風分析法和抖振反應譜分析法。第三，從工程實際應用出發，通過參數分析，對精確方法進行適當簡化，推導出了橋梁在懸臂施工中的抖振反應譜法的實用計算公式。最後，通過工程實例，採用兩種抗風分析方法分別進行了分析計算，實例分析的計算結果說明反應譜法計算得到的內力大於按陣風系數法得到的內力；同時提出了在懸臂施工狀態工程施工中的臨時抗風措施。
  20. At first, after the dynamic characteristics of the plane and the spatial supporting systems were studied, fore some steps fixed frequency and shape of vibration were gained. secondly, several design parameters which influence the dynamic characteristics of this kind system were discussed, including pre - tension value in the cable, cross - section of the cable, cross - section of steel - bar and form change. some applied decisions were found

    首先，對平面和空間索桁支承體系的自振特性進行研究，得到體系的前幾階固有頻率和振型形式；進而探討了索的預拉力、拉索截面面積、撐桿截面面積、形狀改變（撐桿長度l ）等主要設計參數對體系自振特性的影響，得出了一些有益的結論，為體系設計和施工提供意見和依據；最後，對體系的風振特性進行了分析，用幕墻風荷載規范對幾種索桁支承體系形式進行風荷載計算。
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