modal approach 中文意思是什麼
modal approach
解釋
特徵類型分解法-
In fact, the ssc approach can be used to detect structural changes and quantify modal relations
事實上，本法可以用來檢測結構體的變化。 -
Presents the model proposed for analyzing the vibration characteristics of shrouded blades and their calculation method by employing a wave propagation theory and modal synthesis technology coupled with a finite element method from the view point it is possible not only to conduct frequency modulation of the shrouded blades of a gas turbine, but also to utilize the friction effects between them to dissipate energy, thereby attaining the aim of vibration alleviation, as shrouded blades have been widely used in the design of high - speed turbomachinery, such as modern gas turbines and steam turbines, and with the shrouded blades forming an integral whole in a centrifugal force field, the vibration characteristics of the whole ring of blades are different from those of a single isolated blade, and this makes it essential to take into account the integral effect of blade shrouds, concludes from the calculation examples and engineering application that the above approach is valid and correct along with the possibility of considerably reducing the scale of calculation and analysis, and points out it is necessary to take into consideration the coupled effect of the whole ring of blades while the dynamic characteristics of shrouded blades is being analysed
帶冠葉片不但能調頻，還可以利用葉冠之間的摩擦效應來耗散能量，達到減振的目的.帶冠葉片在離心力場中形成一整體，其整圈葉片振動特性不同於單個孤立葉片，需考慮葉冠的整體效應.利用帶冠葉片系統的循環對稱性，提出了採用波傳播理論和模態綜合技術，結合有限元方法研究燃氣輪機帶冠葉片振動特性的分析模型和計算方法.算例和工程應用證明了該方法是效性的、正確的，並可以大大降低計算分析規模.研究表明帶冠葉片動力特性分析時必須考慮整圈葉片的耦合效應 -
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。 -
Program and workshops by dr. terlinsky to reduce weight offer physician assistance, multi - modal approach and individualized treatment
-提供體重管理挑戰計劃減肥博客等寬闊的交流平臺。 -
In this method, the measured response data are first decomposed into modal responses using empirical mode decomposition ( emd ) approach with intermittency criteria
使用帶有間歇指標的經驗模式分解（ empiricalmodedecomposition - emd ）方法將測量響應數據分解成各階模態響應。 -
By means of adopting structure mechanics method, quasi - static approaches, response spectral of modal combination approach and time - history analysis approach, the responding problems of static - dynamic load of structure are solved
分別採用擬靜力方法、動力分析中的振型分解反應譜方法與時程分析方法進行計算，通過三種計算方法的對比分析進水塔結構在地震力作用下的動力響應。 -
Dynamic modeling and modal truncation approach for a high - speed rotating thin elastic rectangular plate
高速旋轉柔性矩形薄板的動力學建模和近似演算法 -
The theory of laplace wavelet was analyzed. a correlation filtering approach was introduced using the laplace wavelet to decompose a signal into impulse responses of single mode subsystems. modal parameters can be estimated by correlation filtering signal with laplace wavelet
分析了laplace小波的理論，研究了利用laplace小波將系統響應信號分解成為單模態系統沖激響應的相關濾波方法，並通過信號與laplace小波族的相關濾波進行了單模態和多模態系統的模態參數估計。 -
The effective approach to lighten the weights of tall building structures and its social and economic benefit in practical projects am discussed from the following aspects : the reasonable choice of the structural modal, the method of calculation, the optimization of the structure and the application of high strength and light weight building materials both in china and overseas
摘要從結構合理選型、計算方法、結構優化以及輕質高強的建築材料在國內外的應用等方面論述了減輕高層建築結構自重的有效途徑和在實際工程中已取得的良好的社會效益與經濟效益。 -
Secondly, two carbon fiber reinforced composite beams were fabricated, and their modal frequencies were measured by an experiment method. thirdly, delaminations were modeled by pairs of nodes with the same coordinates but different node numbers, while the modal frequencies of these beams with different delamination location and size were computed by an eas piezoelectric solid element. moreover, a novel method combining computational mechanics and neural network was demonstrated for composite health monitoring ; the first five flexure modal frequencies obtained by fem were modified by a primary revising approach and were used to train the neural network
本文較全面地評述了神經網路的應用模型、改進演算法等，編制了bp神經網路程序：制備了纖維增強復合材料試件，並進行實驗模態分析；利用坐標相同、節點號不同的方法模擬脫層損傷，基於eas列式的壓電固體單元計算了不同脫層損傷情況下的頻率信息；針對基於實驗數據訓練神經網路存在樣本不足的缺陷，本文提出了利用有限元方法對含有脫層損傷的復合材料試件進行數值模擬，以前五階彎曲模態頻率構建訓練樣本的新思路，並提出了一種初步的計算值修正方法，以此構建神經網路的訓練樣本：將實驗模態分析的結果送入訓練好的神經網路進行預測，實現了對復合材料梁的脫層損傷的定位和損傷程度的評估。 -
4. establish it state space modal by applying the theory of modern control to electro - hydraulic position servo system, and bring forward the method of quadratic optimal control and approach track optimal control
將現代控制理論應用於電液位置伺服系統，建立精校機電液位置伺服系統的狀態空間模型，提出了基於狀態空間的最優二次型控制和漸近跟蹤控制。 -
Experiments are presented that demonstrate the approach registering multi - modal biomedical image using the data base of vanderbilt university, usa
隨后，我們採用美國vanderbilt大學的多模態的醫學圖像數據庫中的圖像數據，對我們的演算法進行了測試。 -
Based on mechanical vibration theory, with the torque divider ' s structure unchanged, there exist two kinds of approach to reduce the resonance : one is keeping the bending vibration frequency away from the excitation frequency, the other is increasing the modal damp
根據機械振動理論，在不改變分動器結構設計的條件下，採用兩種方法降低螺栓共振響應：一種是將彎曲模態頻率移出激勵頻帶；另一種是提高彎曲模態的阻尼比。 -
2 a modification approach of the dynamic model of cable - damper system is proposed. the approach is employed to modify parameters of cable - damper modal using cable system ' s first a few of modal frequencies which is obtained by field test. results show that analytical frequencies of modified cable model are close to field test ' s one with very small errors
2 、提出了一種拉索動力模型修正方法，該方法利用實測的拉索系統前幾階模態頻率，修正拉索模型參數，修正後的拉索計算模型得到的模態頻率與實測值非常接近。
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