torsion frequency 中文意思是什麼
torsion frequency
解釋
扭振頻率-
The notable torsion effects of the surface ground motion above the alluvial valley are illustrated and the torsion effects become stronger as the frequency of the incidence is higher. ( 4 ) antiplane surface motion of the underground circular soft inclusion and the underground homogeneous soft interlayer is investigated in this paper. the results indicate : surface displacement amplitudes just above the soft inclusion of small depth - to - width ratio is amplified and soft interlayer of small depth - to - thickness ratio is amplified to a certain degree, and moreover, the latter is lower limit of the former
結果表明：垂直入射時，小深寬比軟夾塞上方地表位移幅值有較大的放大，小深厚比軟夾層的地表位移幅值也有一定的放大，且後者為前者的下限；波接近掠入射時，軟夾塞正上方地表點和軟夾層的中國地震局工程力學研究所碩士學位論文一地表位移幅值都沒有放大，而軟夾塞迎波面一側地表點的位移幅值會有一定的放大；軟夾塞上方的地表位移運動有較強烈的扭轉效應，且此扭轉效應隨入射波頻率的增高而增強。 -
Physical testing of rubber - determination of the low - frequency dynamic properties of rubbers by means of a torsion pendulum
橡膠的物理試驗.第a31部分:用扭擺試驗測定橡膠的低頻動態性能 -
With the speed increment, not only 1 / 2x and 2 / 3x frequency component appear in low frequency segment, but also 4 / 3x frequency component begin to appear in high frequency segment. the amplitude of fraction frequency is usually larger than that of multiple frequencies. the nonlinear characteristic of torsion for rubbing rotor is similar with that of flexural vibration completely
研究結果證實了扭振特徵和非線性特性用於該類故障診斷的可行性：從發生碰摩起，扭振分頻和倍頻相伴出現，轉速較低時， 1 / 2x成分突出，隨著轉速升高，不但有1 / 3x及2 / 3x分量出現，而且出現了4 / 3x成分，分頻幅值大於工頻及倍頻；彎振和扭振的非線性運動特性完全相似，扭振有抑制轉子系統復雜運動的能力。
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