modal shape 中文意思是什麼
modal shape
解釋
模態振型-
It shows that the modal shape and mode frequency are highly coupled with the viv response of a marine riser with low mass ratio
該模型的計算結果表明，立管的模態振型、模態頻率與渦激振動響應高度耦合，並且對于低質量比的情況尤為明顯。 -
Considering the shape of quantum - wires, the modal x - ray diffraction of trapeze quantum - wire is established. the relationship between fourier transforms quantum wires shape and x - ray diffraction is presented to obtain the more exact info of parameters. so the fundamental characteristics of x - ray diffraction for quantum wire array are investigated
考慮到量于線的形狀，建立了梯形量子線的x射線衍射模型，得出量子線的形狀與x射線衍射之間互為傅立葉變換的關系，從模擬的結果得到更為精確的參數信息，從理論上認識了量于線陣列的x射線衍射的最基本特點。 -
I turns out to be that the position and degree of damage can not be well detected only by eigenfrequency, while only can detect if the damage has appeared. however, severe damage can be diagnosed if the modal shape and natural period are used
利用以上指標對試驗構件的損傷進行識別與定位，研究結果表明，僅憑獲取的固有頻率不能準確判斷結構構件的損傷狀態及損傷位置，只能初步判斷結構中是否出現損傷。 -
The influences of stator ' s teeth on vibrating modal of the linear standing wave usm are discussed in this paper, in which eigenfrequency and wave - shape are analyzed while the position and geometry dimension of stator ' s teeth are changed, and it can give some advice on design for standing wave linear ultrasonic motor
摘要本文對一類直線型駐波超聲電機振子的振動模態進行了系統的分析，討論了定子齒的位置、幾何尺寸對直線型超聲電機的固有頻率、振型的影響，為該類駐波型直線超聲電機的設計提供了理論依據。 -
The quantum dots are considered as pyramid shape approximately, therefore the dittraction of dots is considered as diffraction from triangle. the transverse period is obtained using the transform of fourier. the trustiness of this modal is showed through comparing with the result come from triple - axis diffraction formula and result of stm
將量于點近似看成金字塔狀，從而量于點的衍射可以看成三角形衍射，利用三角型的傅立葉變換，求得量于點的橫向周訕，與三9m力射結果及盯m求得量于點的橫向周期一致，說明本模型的可靠性。 -
This thesis will present a new simple method to calculate the seismic response of the framed structures. this method calculates the effect of the first and second modal vibration. the first modal shear force of every floor distributes according to the shape which is close to the first modal shape
本論文提出了一種新的計算框架結構地震作用效應的簡化方法，考慮前兩個振型的作用，對于第一振型的各層剪力，按照近似於基本振型的形狀分佈，第二振型各層剪力引用廖河山提出的方法計算，然後用將兩個振型的剪力「平方和開平方」的方法，計算得到各層剪力（總效應） 。 -
By analysis of the transfer function and modal shape, we can draw a conclusion that this system is different from the common frame structure and even different from other types of structure with special - shaped columns. so the necessity of the studying has been verified
通過對傳遞函數的分析以及對模態振型的回歸計算，找到了該結構體系由於其特殊的施工方式和構造措施與一般框架結構體系及異形柱填充墻體系相比所具有的特點。 -
As a classical and practical method in ambient vibration experimental modal analysis, auto - cross spectrum density method replace the frequency response function with power spectrum and achieve its mode shape from transmissibility between the response signals and reference signal
自互譜法作為環境激勵實驗模態分析的一種實用的經典方法，用響應點和參考點間的功率譜曲線來代替頻響函數曲線，並由響應點和參考點之間響應的傳遞率得出振型。 -
Neural network ' s training and damage detection influenced by input vectors which include the group of the first three frequencies or the group of the first three frequencies as well as the first modal shape, are studied
比較了僅以三階頻率作為神經網路輸入向量和三階頻率及一階振型組合作為網路輸入向量對網路訓練和損傷檢測結果的影響。 -
It analyzes the dynamic response of many different damage cases of simple i - shape beam structure and discusses their influences to natural frequency and modal curvature. it is found that the natural frequency and modal curvature can be used in identifying the severity and location of structural damage respectively. dynamic response of some real beams are measured and compared to the results analyzed by computer, it is found that there are some differences between them and the main reason is the error caused by modeling
2 .針對土木結構中最為常見的梁式結構，對簡支工字鋼梁的多種不同損傷工況的動力特性進行了有限元模擬分析，研究了損傷對頻率和模態曲率的影響，發現固有頻率變化率和模態曲率的變化分別可以用於損傷程度和損傷位置的識別;在實驗室中實測了幾種工況的鋼梁的振動模態，發現實測結果與計算結果有一定的差異，分析其原因主要是模型誤差和噪聲影響。 -
The use of the batten interpolation for modal parameter in the curvature modal and flexibility difference curvature method can solve the contradiction between decreasing measure points and the guarantee of identification precision ; the identification program has also been developed in matlab : as long as the former 3 step vibration shape and frequency are input, the value and the graphic representation of damage identification will be obtained by flexibility difference curvature method
本文應用曲率模態法、柔度差值曲率法當中，對模態參數用樣條插值，較好地解決了減少測點與保證識別精度的矛盾；在matlab軟體中開發了識別程序：只需輸入前三階振型和頻率，即可由柔度差值曲率法給出損傷識別的圖示與數值結果。 -
In order to use transverse vibration frequence and modal shape to identify beam boundary conditions, this paper presents five formulas by using the modified theorem of reciprocal works
摘要基於修正的功的互等原理，利用桿件橫向振動頻率及主振型反算桿件邊界條件推導出了5個計算公式，並進行了數值計算。
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