隨機振動分析 的英文怎麼說

中文拼音 [suíjīzhèndòngfēnxī]
隨機振動分析 英文
random vibration analysis
  • 隨 : Ⅰ動詞1 （跟; 跟隨） follow 2 （順從） comply with; adapt to 3 （任憑; 由著） let （sb do as he li...
  • 機 : machineengine
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 分 : 分Ⅰ名詞1. （成分） component 2. （職責和權利的限度） what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] （料想） judge
  • 析 : Ⅰ動詞1. （分開; 散開） divide; separate 2. （分析） analyse; dissect; resolve Ⅱ名詞（姓氏） a surname
  • 隨機 : random stochasticrandom
  • 振動 : vibrate; vibration; vibrance; vibrancy; vibra; vibes; shaking; rumble; jitter; chatter; sway; jar...
  1. We acquired the system ' s dynamic response when the satellite attitude was adjusted and the mode of the antenna. then modal analysis and dynamic analysis have been done to the satellite - antenna system by using the finite element analysis ( fea ) software of ansys. through the analysis we got the system ' s connatural characteristic, the amplitude - frequency characteristic of harmonic response, the power spectrum density of random vibration response, the maximal amplitude and resuming time of impact response

    其次藉助ansys有限元分析軟體，對系統進行了模態分析和動力學響應分析，獲得了不同天線結構參數下的衛星?天線系統的固有特性，簡諧響應的幅頻特性，隨機振動響應的功率譜密度，以及沖擊響應的最大幅值和恢復時間等。
  2. The bouc - wen differential equation model is used in modeling the hysteretic characteristics of these components. the pem ( pseudo excitation method ) combined with the elm ( equivalent linearization method ) is used to analyze the non - linear random vibration of such structures

    採用bouc - wen等提出的微分方程模型描述進入非線性構件的滯變特性，運用虛擬激勵法結合等效線性化進行結構非線性隨機振動分析。
  3. The transverse stiffness limitation index ? the permissible ultimate width / span ratio b / l of the continuous steel truss girder of railway bridge is analyzed in accordance with the analytic theories of random vibration of train ? bridge time - variation system and the required derailment coefficients and comfort of drivers and passengers in train running through the bridge. the limitation index in question may be referred to in the design of the continuous steel truss girders of railway bridges

    基於列車-橋梁時變系統隨機振動分析理論，按照橋上列車脫軌安全系數和司機、旅客舒適度的要求，對鐵路連續鋼桁梁橋橫向剛度限值-橋梁容許極限寬跨比b / l進行了分析，對鐵路連續鋼桁梁橋的設計具有一定的參考作用。
  4. Based on the perturbation riccati transfer matrix method, the calculating program are developed. the program can be used to the perturbation analysis and the sensitivity analysis of the real and complex, the single and repeated eigenvalues and eigenvectors for lateral vibration of rod and beam structures, especially suitable to the perturbation analysis and the sensitivity analysis of eigenvalues and eigenvectors for rotordynamic systems ; 2. the perturbation riccati transfer matrix method was applied to identify the parameters of the rotor for a boiler supply pump, and the accurate dynamic model of the rotor was archived

    該程序可以對桿、梁結構橫向彎曲振動的實數、復數的孤立和重頻特徵值問題進行攝動分析和靈敏度分析，特別是適合於轉子動力學系統特徵值和特徵向量問題的攝動分析和靈敏度分析； 2 、用攝動riccati傳遞矩陣方法解決了某電站鍋爐給水泵轉子的參數識別及動力模型修改的問題，並給出了該種型號的給水泵轉子的更準確的力學模型，為進一步的轉子動力學分析與設計奠定了可靠基礎； 3 、給出了攝動理論在相關領域如隨機特徵值分析、隨機振動響應分析、可靠性分析、靈敏度分析、優化設計以及參數識別中的應用公式。
  5. Random process theory is a kind of effective mathematical tool to handle random vibration problem. through frequency spectra and time domain analysis for random course, the seemed complex vibration time - history can be transferred to trigonometric function series, thus makes it have certain periodic feature

    隨機過程是處理隨機振動問題的一種有效的數學工具，通過對隨機過程進行時域分析和頻譜分析，可以將看似非常復雜和毫無規律的隨機振動表示為三角函數的級數形式，從而使其具備了一定的周期性特徵。
  6. Seismic response analysis of a long - span cable - stayed bridge under random seismic excitations with spatial variations, including travelling effect, incoherence effect and local site effect, was made with stochastic method

    摘要以南京第二長江大橋南漢橋為例，採用隨機振動分析方法研究了地震動的空間變化特性，包括行波效應、部分相干效應以及局部場地效應對大跨度斜拉橋地震響應的影響。
  7. This method is proved to be an accurate solution of random vibration equation, in which all cross - correlation items, either between earthquake inputs or between participant modes are involved naturally. compared to conventional method, the computational efficiency of the developed method is much higher

    此法計算結果自動包含了振型間及各輸入分量間的相關項，理論上是隨機振動方程的精確解法，且與傳統方法相比可大大減少計算量，非常適合分析大型網殼這種自振頻率密集結構的隨機地震響應。
  8. By means of trigonometrical progression method and the mainline track spectrum, the sample function of the chinese mainline railway track random geometric irregularity is simulated. with the data obtained from track geometry inspection car on qinhuangdao - shenyang special line for passenger transport and arma time series model, the sample function of high - speed railway track random geometric irregularity are simulated. based on existing literature, the artificial bogie crawl waves at various different speeds are randomly simulated

    根據我國干線鐵路軌道譜，採用三角級數法模擬出干線鐵路和準高速鐵路軌道不平順的樣本函數；根據秦沈客運專線高速試驗段軌檢車資料，採用arma時間序列模型模擬了高速鐵路軌道不平順隨機樣本函數；在既有研究資料的基礎上模擬出各種速度客車構架人工蛇行波；用隨機變量描述道床橫向剛度，並進行了隨機模擬；將振動理論和穩定理論結合建立系統的分析模型和運動方程；根據monte ? carlo法編制了車輛?軌道耦合系統隨機振動分析程序，進行了無縫線路隨機動力響應分析，通過試驗對計算模型、計算方法進行了驗證。
  9. Along - wind loading is digitally simulated with the aid of random vibration theory and used as load input of dynamic analysis of wind - excited tower

    本文利用隨機振動理論模擬了合肥電視塔的順風向脈動風荷載，並進行了合肥電視塔的風振反應分析。
  10. 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。
  11. None but is the test spectrum abundant and controllable, it is possible to simulate the stresses environment needed for exposing weakness of the product. based on summarizing the present status of the vibration test and vibration environment simulation technology in the world, the topic of simulation of super - gaussian random vibration environment with controllable frequency spectrum and its applications in reliability enhancement testing is put forward. the main content and conclusions of the dissertation are as following : 1

    本文在綜述國內外振動試驗技術和振動環境模擬技術的基礎上，引出「頻譜可控的超高斯隨機振動環境模擬技術及其在可靠性強化試驗中的應用」這一主題，並緊緊圍繞該主題開展了如下研究工作: 1 .全面分析了振動激勵的功率譜密度量級、幅值分佈、帶寬以及試件結構的固有頻率、阻尼比等因素對疲勞損傷累積的強化效應，提出振動強化試驗激勵信號應具備的重要特性:頻譜可控和超高斯，確立了本文的研究主題和方向。
  12. Then, from the expressions of structural random response of the frequency domain, the computational expressions of the mean value, variance and variation coefficient of the mean square value of the structural displacement and stress response under the stationary random excitation or non - stationary random excitation are developed by means of the random variable ’ s

    在此基礎上，從隨機振動頻域分析出發，導出了在平穩或非平穩隨機激勵下，隨機結構的位移響應均方值、應力響應均方值的數字特徵計算表達式，通過算例驗證了所建模型和所提求解方法的正確性和有效性。
  13. Finally, the random vibration analysis of the signal transform device is presented. experimental modal analysis is discussed briefly. the reasons why the relays on the printed circuit board were destroyed under random acceleration excitations are found out

    本文最後對信號變換裝置進行了隨機振動響應分析，簡要探討了實驗模態分析法，找出了裝在印製電路板上的繼電器在隨機振動試驗中被損壞的原因，也介紹了結構動力模型修正技術的發展。
  14. Random vibration analysis of stochastic antenna structures under wind excitation

    風荷激勵下天線結構的隨機振動分析
  15. The probability density evolution method for compound random vibration analysis of stochastic structures

    隨機結構復合隨機振動分析的概率密度演化方法
  16. Modal analysis, frequency response analysis, random vibration analysis and vibration fatigue analysis are carried out based on the modified finite element model. the first natural frequency of pcb is 57 hz, and the dynamic response in the first natural frequency is the largest. weak points are also found

    為分析該印製電路板可靠性及設計缺陷，需對修改過的有限元模型進行模態分析、頻率響應分析、隨機振動分析及疲勞壽命分析，以全面了解該印製電路板的動態特性（包括:印製電路板的固有頻率、隨機振動響應情況） ，以及存在的薄弱環節。
  17. Wavelet numerical method for nonlinear random system

    用於隨機振動分析的小波數值方法
  18. The random analysis of 4ws is focused on stochastic stability, especially in stochastic bifurcation. the results have both theoretical and application significance

    汽車四輪轉向系統的隨機振動分析的側重點在於隨機穩定性的分析，特別是在隨機分岔的分析方面，具有重要的理論和實際意義。
  19. These exterior excitations can be treated as gauss procedure or filtering gauss procedure. but because of the nonlinearity, the response of structure is not absolute gauss procedure

    在隨機振動分析中，這些外激勵可當作gauss過程或濾波gauss過程，但由於結構的非線性，結構的反應一般並不完全屬于gauss過程。
  20. It is pointed out that the pseudo - excitation method is of great advantage for analyzing the seismic responses of multi - degree - of - freedom linear structures, especially for the multi - point supported structures subjected to spatially varying ground motions

    對近年來發展的虛擬激勵法在線性結構系統中所具有的高效隨機振動分析作了較為完整的介紹，尤其在多點地震激勵的隨機振動分析中具有優越性。
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