elements of vibration analysis 中文意思是什麼
elements of vibration analysis
解釋
振動分析基礎-
In theoretical analysis, finite element method is firstly used to solve the mechanical - electric coupling problems in a flexible plate with piezoelectric elements and to obtain structural vibration modal shapes. focusing on collocated type of piezoelectric sensors / actuators, the maximum determinant of fisher information matrix criteria is chosen as the optimization function and then simplified to determine an optimal principle for the best location of piezoelectric elements
本文研究柔性板振動控制中壓電元件的位置優化設計問題，針對壓電傳感器和驅動器的同位布置結構型式，將壓電元件的有限元分析方法與d優化設計準則相結合，直接利用結構的模態振型確定壓電元件在柔性板上的最優位置。 -
It combines finite element method and the optimal design of piezoelectric elements together, and therefore can be applied to the vibration analysis and design of complex smart structures
改進后的方法將結構數值分析方法與壓電元件的優化配置問題相結合，更加具有可操作性。 -
Piezoelectric elements can be used as sensors and induced strain actuators in active vibration control systems. since the positioning of piezoelectric elements can affect control performance greatly, it has to be carefully determined, in this dissertation, detailed theoretical analysis and brief experimental study is made on the optimal positioning of piezoelectric elements for active vibration control applications
在智能結構振動主動控制系統中，壓電元件可以分別作為傳感器和作動器，其在結構中的布置方式對振動控制性能影響很大，是振動主動控制系統設計的重要問題。 -
The finite element model of hangzhou grand theater ' s structure is built up. through the modal analysis on the model, the structure and structural natural vibration characteristics are presented along with the key elements " influence on the natural vibration characteristics
根據杭州大劇院實際結構參數，建立了大跨橢球面屋蓋和圓錐面幕墻組合結構的有限元模型，分析了自振特性以及關鍵桿件對自振特性的影響。 -
In this thesis, the author combined the theory analysis and the finite elements analysis to study the vibration performance of the elastic arm. found the natural frequencies and the modal shapes of the elastic arm of 1 inch hdd around the working frequencies
本文通過理論分析和軟體模擬相結合的方法，對微硬盤磁頭彈性臂的振動特性進行了研究，找到了一英寸微硬盤磁頭彈性臂在工作頻率附近的固有頻率和模態振型。 -
The ratio of story shear rigidity as well as the equivalent lateral rigidity ratio of story above the transfer story to the story under the transfer story should be designed properly to avoid the transfer story becoming weak story, thus the shear walls and the columns in the large base will not yield before the elements above the transfer story ; ( 2 ) the translation - torsion coupled effects and the vibration in the plane should be considered in analysis of structure with large base and muti - towers
轉換層的設計除應控制層剪切剛度比外，還應控制轉換層上部與下部結構的等效側向剛度比以避免薄弱層出現在框支層，保證地震作用下落地剪力墻和框支柱不先於轉換層上部結構進入屈服狀態；大底盤多塔樓結構的分析必須考慮平扭耦聯振動和樓板平面內振動的影響。 -
Then, the modal analysis of two differently typical biomimetic wings are conducted and their modal parameters as nature frequency and vibration modes are obtained. as a result, the plane - structure wings with shell elements for fmav is not ideal comparing with the truss - structure wings composed by shell and pipe elements
利用ansys軟體對兩種結構類型的仿生翼進行模態分析，得到其低階固有頻率及振型等模態參數，並由結果指出純殼單元平板結構作為微撲翼飛行器的機翼不夠理想，而採用梁單元和殼單元的復合結構是設計微撲翼飛行器機翼的一個方向。 -
Owing to the large generality of three - dimensional solid elements, the fem program based on this model can be applied extensively on the analysis of vibration characteristics of the elastic continuum
由於三維實體單元適應性強，因而依據這一模型編制的有限元程序應用范圍廣，可用於一般彈性體結構的動應力分析。
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