free harmonic vibration 中文意思是什麼
free harmonic vibration
解釋
自由諧振-
As an example the main cable of the tsing ma suspension bridge is considered. the free vibration frequencies and the dynamic response under a harmonic point load are determined
作為算例,對香港青馬懸索大橋的主索進行了計算,求得了索的固有振動頻率以及索在簡諧荷載下的動力響應。 -
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。
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