vibration node 中文意思是什麼
vibration node
解釋
振動波節-
To this problem, on the basis of the work property and characteristics of the water turbine ' s blade. the finite element mechanics model of blade vibration characteristic is described with the eight - node three - dimensional nonconforming and all parts of blade damp are analysised, the calculating model of blade damp is built, the tackling method of blade damp in calculating of dynamic stress is presented
本文根據水輪機葉片的特點和工作性質，採用空間八結點非協調等參單元描述水輪機葉片運動特性的有限元力學模型，詳細分析了水輪機葉片阻尼各組成部分，並建立了葉片阻尼的計算模型，提出了葉片阻尼在動應力計算中的處理方法。 -
The wavelet packet transform is investigated as a novel means of extracting time - frequency information and reducing dimensions of feature from vibration signal in the infinite time domain. neural network is discussed as a pattern classifier to finish damage pattern classification by inputting node energy feature vector
小波包變換以其特有的高頻解析度能夠實現對結構振動信號的特徵提取，可以把時域無限的測試振動信號降維，得到有限個節點能量信號構成的特徵指標。 -
Based on the assumption of periodic rubbing force in rotor system, the rubbing forces onto each node of rotor system are estimated by modal expansion technique and the sub - harmonic decomposition of residual matrix between faulty and faulty - free vibration signals of rotor system through fft ( fast fourier transformation )
基於轉子系統碰摩力的周期性假設，利用模態擴展方法，對故障和健康轉子系統振動信號的殘差矩陣進行傅立葉級數的分頻諧波近似，估算得到轉子軸承各節點的碰摩力。 -
Using three - dimensional finite element techniques, wave propagation theory, modals synthesis theory and numerical analysis methods, the vibration characteristics of steam turbine system are studied. according the structural features of practical blade discs, the 3 - d 8 - node element model is used because of its fitness to complex structures
本文採用三維有限元技術、波傳播理論、接觸分析、預應力模態分析等數值分析方法，對汽輪機葉片?輪盤系統的振動特性進行了深入而較全面的分析研究。
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