harmonic element 中文意思是什麼

harmonic element 解釋
調和元素
  • harmonic : n 1 【音樂】泛音；和聲。2 〈 pl 〉【數學】諧函數，調和函數。3 【物理學】諧波，諧音。adj 1 和睦的...
  • element : n 1 要素；成分；（構成）部分；分子。2 【化學】元素；【數學】元，素；【機械工程】單元；單體；【無...
  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 wing is modeled structurally by vibrational modes, which are used as amplitude of motion by a finite element analysis. conservative full - potential equation and three dimensional unsteady euler equation are used to compute the unsteady transonic flows around airfoil and wings under simple harmonic motion

    以給定機翼模態分佈下機翼上各點的模態值作為運動幅值，以三維非定常全位勢方程和三維非定常euler方程為控制方程，求解三維機翼簡諧運動下的非定常氣動力。
  3. Numerical analysis of the electromagnetic field caused by the eddy - current transducer the dissertation calculates the field caused by the solenoid coil with a finite - length ferrite core carrying time - harmonic current by the finite element method

    二、渦流傳感器電磁場數值分析本文採用有限元數值分析方法計算了含有有限長磁芯的放置式線圈的屯磁場。
  4. Recurrence formula for radial matrix element of two - dimen - siowal isotropic harmonic oscillator

    三維各向同性諧振子徑向矩陣元遞推公式
  5. This paper investigates the pressure sensitivity of an interferometric fiber - optic hydrophone element with a concentric mandrel including an enhanced sensitivity layer based on the theory of elastic mechanics and finite element method ( fem ) and then investigates its harmonic frequency and vertical directional property using fem, and verifies all the results derived from theoretic analysis at last

    本文分別基於彈性力學的理論和有限元的方法對含彈性增敏層的同軸干涉型光纖水聽器基元的聲壓靈敏度進行研究，並基於有限元的方法對其諧振頻率和垂直指向性進行分析，最後用實驗對各項分析結果進行了驗證。
  6. After analysis of the parameters of the devices, a conclusion is achieved that we can directly use the parameters of the dampers instead of devices to design the buildings in the common situation. then a one - freedom modal is used to compare the differences of performance between these two dampers under harmonic load. finally, three buildings, which are installed with viscoelastic dampers, viscous dampers and no dampers respectively, are analyzed using finite element method, time history method and response spectrum method, and the result is the same as that of harmonic analysis

    如果支撐剛度較小，應採用本文推倒的公式計算阻尼裝置的性能參數；利用單質點模型進行阻尼結構在簡諧荷載作用下的性能分析，並比較了粘彈性與粘滯阻尼結構在振動控制方面的性能差異；最後利用數值方法分別對未安裝阻尼裝置結構，安裝了粘彈和粘滯阻尼裝置的三種結構進行了反應譜和時程分析，得到了與理論分析一致的結果。
  7. Second, through employing the 3 - d finite element model and the dual objective function inversion method developed in this paper, and taking the measured fundamental frequency of system and the structure response to a harmonic excitation at the top of structure in field as the reversion objectives, the linear material parameter inversion is performed in ansys by using ansys parameter design language ( apdl )

    第二，採用三維實體有限元模型和本文提出的雙目標函數反演方法，把現場測試得到的系統基頻和頂部激振下實測的結構動力響應作為反演目標，利用ansys參數設計語言（ apdl ） ，在ansys軟體中實現了系統材料線性參數的反演。
  8. In chapter 4, the model - building principle and calculating method of finite element dynamic analysis for large - sized assembled structure are discussed. the substructure model for hydropower house vibration analysis is established to obtain precise modal of generator floor. the harmonic vibration assumption is adopted to calculate house structure ' s dynamic response from hydraulic excitation force of hydraulic turbine generator unit

    第四章討論了大型組合結構有限元動力分析的建模原則和計算方法，建立水電站廠房振動分析的下部結構模型，對巖灘廠房進行整體模態分析，較準確地得出發電機層樓板自振特性；同時引進簡諧振動假定，迸行了機組水力振動作用下的廠房結構的動力響應分析。
  9. Before giving the numerical solution, the finite element method and how to make the finite element analysis for 3d time - harmonic electromagnetic fields and 3d eddy - current fields are introduced in detail

    在此之前，詳細介紹了有限元方法以及三維時諧電磁場的有限元分析方法和三維渦流場有限元分析的a - ， a法。
  10. To verify analytical solutions, the numerical solution is computed for the problem that an arbitrary time - harmonic current dipole is in a conductive sphere utilizing finite element method and the analytical solution is compared with the numerical solution

    為驗證所求電磁場解析解的正確性，利用通用有限元分析軟體對導體球中時諧電流元的電磁場解析解作了數值驗證。
  11. It is shown by structural seismic response of four wavelets that littlewood - paley wavelet is not suitable for structural seismic response, because structural response is too small, meyer wavelet is a better wavelet for structural seismic response, for it ' s structural response is agreement with the finite element method, and also harmonic wavelet, structural response under earthquake is a little bigger than finite element method, structural response under odd exponent wavelet is also bigger than finite element method, this method is very simple by wavelet transform, wavelet transform method is different from old methods, one is with which not only knows the effects of earthquake wave detail frequency - band on structural response, but also considers earthquake wave ' s non - stationary of frequency and time - domain value, another is the second mode shape and higher mode shape response that do n ' t attenuate so fast

    通過對這四種小波的結構地震反應分析研究說明： littlewood ? paley小波不適合於用來作結構地震反應分析，因為在littlewood ? paley小波下的結構地震反應太小，不符合實際情況；用meyer小波作結構地震反應分析比較合適，和有限元法的結果比較接近；也可以用諧波小波來作結構地震反應分析，只是在諧波小波下的結果略為偏大；單邊指數小波下的結構地震反應分析比有限元法稍大一點，它通過小波變換大大簡化了結構地震反應分析。用小波變換方法來進行結構地震反應分析和以往方法不同的是：它不僅可以知道地震波的具體頻率段對結構反應的影響，而且同時考慮了地震波的幅值非平穩性以及頻率非平穩性；另外與以前方法得到的結果有差異的是，第二振型及以後的高一點的振型的反應沒有以前的方法衰減得快。
  12. In accord with the state standard about harmonic. the harmonic permission value of tangqian line is calculated. some measurement data are shown and analyzed, and some main conclusion is drawed that the 7th harmonic voltages of tangqian line is near to the permission value, total harmonic voltage distortion ratio has oversteped the permission value. the 3th harmonic, the 5th harmonic, the 7th harmonic and the 9th harmonic current from tangqian line all overstep the permission, the largest 5th harmonic current ratio in tangsc reaches 44 %, the 7th harmonic and the 9th harmonic current in tang7c and tangsc is large maybe because the harmonic current is magnified. this paper studies the model of each element in tang yin substation

    根據有關公用電網諧波的國家標準，計算出湯牽線注入湯陰變電站的諧波電流允許值，從實測數據可以得出一些重要結論：湯牽線7次諧波電壓含有率的最大值接近國標中的限值，湯牽線的諧波電壓總畸變率的最大值已超標；湯牽線注入電網的3 、 5 、 7 、 9次諧波電流都超標；湯6c電容器的5次諧波電流含有率較高，最高達到44 ；湯7c和湯8c電容摘要器的7次和9次諧波電流含有率偏高，原因可能是發生了諧波電流放大現象。
  13. Then experiment was processed to testify the calculated results. based on the theory of vibration mode, harmonic response and experiment, fea meshing, fea element and bound condition of expansion joint were analyzed. then a parametric fea modeling & post process software was developed by apdl and visual basic langrage

    本文採用有限元數值分析方法，利用大型商用有限元計算軟體ansys ，研究了基於結構參數化設計思想的波紋管膨脹節的振動模態和含波紋管膨脹節管系的振動響應分析方法，開展了波紋管膨脹節模態試驗驗證。
  14. According to the theory of electromagnetic fields, the large salient synchronous generator with fractional stator slot are calculated and analyzed by the finite element method ( fem ) in this paper. the fourier analysis method is applied to decompose the air gap magnetic density into the basic spatial component and a series of harmonic components and wave shape eigen coefficient of air gap magnetic field are calculated

    本文根據電磁場理論，從耦合場的弱耦合角度首先計算了定子具有分數槽繞組的大型水輪發電機的電磁場，採用付立葉諧波分析的方法把氣隙磁密分解為空間基波和一系列諧波，進而計算出氣隙磁場波形特徵系數。
  15. In this dissertation the finite element analyze ( fea ) has been used to analyze the characteristic of the vibration of the frame. the dynamic characteristic has been deeply and systematically comprehended through the modal analysis and harmonic response analysis. it provides the important basis of solving the vibration of the motorcycle and has some theoretical significance and important practical value

    本文主要採用有限元法對摩托車車架的振動特性進行分析，通過模態分析及諧響應分析，對車架的動態特性有了深入系統的了解，為解決摩托車的振動問題提供了重要的依據，具有一定的理論意義和重要的實用價值。
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