periodic force 中文意思是什麼
periodic force
解釋
周期力-
Recent study of the kilohertz quasi - periodic oscillations ( qpos ) in low mass x - ray binaries ( lmxbs ) indicates that the radiation force, other than the magnetosphere and disk interaction and the general relativity ( gr ) effect setting the inner disk edge, serves as the disk truncation mechanism on shorter time scales. some results and discussions are presented in this paper
最近對低質量x射線雙星中的千赫茲準周期振動的研究表明，是輻射壓力，而不是盤和磁球的相互作用以及處于盤內邊界的廣義相對論效應在短時標的盤切斷機制上起作用.本文給出了一些研究結果及討論 -
It is applied to sorts of locomotive engine, in course of revolving of crank and connecting rod mechanism, there are revolving of the crankshaft, swinging of the connecting rod and reciprocating motion, so its motion state is complex, and periodic unbalanced force, by a few components, is great
曲柄連桿機構在高速運轉過程中，有曲軸的轉動、連桿的擺動及活塞的往復運動，其運動狀態復雜，各個部件所產生的周期性不平衡慣性力大，是引起發動機振動的主要原因。 -
Based on vibration principle, the paper establishes dynamics analysis model of output shaft with elastic support, according to fourer series spread principle of periodic function, the dynamic response formula is derived by separating complex vibration force into sum of many simple harmonic excitation function of whole number times frequency relations. the result shows that response of both sides support is synchronous when load distribution non - uniform coefficient is 1
依據振動理論建立了具有彈性支撐的輸出軸的動力學分析模型，根據周期函數的傅里葉級數展開原理，將復雜的激振力分解成為多個頻率成整倍數關系的簡諧激勵函數，導出了動態響應表達式，結果表明，當載荷分配不均勻系數為1 . 0時的輸出軸兩端支撐同步。 -
For hydrodynamic force, the oil - gas would migrate at vertical and lateral, and accumulate at suit traps. at the same time, for hydrogeology gyrations, petroleum would periodic migrate and ringed distribute. therefore, ground fluid is at different hydrodynamic systems
同時，由於古水文地質的旋迴性導致同一流體動力體系內不同流體動力系統的油氣一致階段式運移，並形成一個以凹陷為單元階梯式一環帶狀的油氣分佈規律。 -
Based on the hydrodynamic, by using momentum theory to the liquid in the flow channel, the computational formula of the air exciting - vibration force is acquired. by using four - step runge - kutta method, the periodic response results of the elastic rotor system with one single - disc are gained. then the dynamic characteristics of the rotor system at the certain rotate speed and the certain physic parameter of system are analyzed by using the phase spaces and poincare maps of this system
基於流體動力學，通過對葉片流道內的流體模型應用動量定理，得到此汽流激振力模型，並採用四階龍格庫塔法，得出了單盤彈性轉子系統的周期響應規律，然後根據系統的相軌跡及poincare映射圖，分析了系統在特定轉速及特定的轉子系統參數下的運動特徵。 -
The dynamics behaviors of the flexible jeffcott rotor system supported by unsteady short dynamic bearing are investigated. based on nonlinear unsteady - state dynamic n - oil film force model described by three functions the local stability of the periodic solutions with the controlling parameters, rotational speed ratio, imbalance amount, damping ratio and viscidity, are predicted by using the floquet multiplier. it is found that the period doubling bifurcation is caused by a certain imbalance amount and the hopf bifurcation is created by the lost stability of the oil - film
研究了非穩態動載短軸承支撐的jeffcott柔性轉子系統的動力特性，基於可用三個函數表示動態油膜的非穩態非線性油膜力模型，將轉速比、不平衡量、阻尼比、粘度作為控制參數，利用floquet乘子預測周期解的局部穩定性，發現倍周期分叉是由一定量的不平衡引起的，而hopf分叉是由油膜失穩造成的。 -
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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