unsteady force 中文意思是什麼
unsteady force
解釋
非定常力-
For obtaining the numeral solutions of round elastic plates in axisymmetrical deformation with varying - thickness in nonlinear deformation in the unsteady electromagnetic field and mechanical field, by establishing the equations of motion, the equations of distortion, the equations of lorentz force, the equations of electronic dynamic mechenical, and adopting iterative method, we gained the nonlinear magneto - elastic calculation method and outcome of current - carrying shell, and gained the influencing degree toward mechanical parameter of varying thickness round ferreous plates in the electromagnetic field and mechanical field
摘要為了獲得內邊界固定的環形導電薄板在均布力與橫向磁場作用下的變形問題的數值解，通過建立運動方程、變形方程、電動力學方程和洛侖茲力方程，運用迭代法得出了載流板殼的非線性磁彈性的計算方法和結果，以及機械場、電磁場對鐵質變厚度圓板各力學參量的影響程度。 -
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。 -
Research of unsteady aerodynamic force and oscillating flow field around cascade on shafting torsional vibration
軸系扭振條件下葉柵振蕩流場研究和非定常氣動力的確定 -
By acquiring the structure and environment parameters, the active control can greatly reduce the vibration on the model and the supporters caused by the unsteady aerodynamic force which badly influences the experienced data precision
在進行風洞試驗時，受非定常氣動力的作用，模型會與天平、支桿和支架一起產生振動。模型劇烈的振動嚴重影響風洞測力試驗數據的精度。 -
Owing to unsteady ship driving power, vibration of ship body, sealing function of seal part and variable stern flow companying with rotating propeller, the unsteady force results to vibration of ship shaft, which makes the oil film of stern journal bearing vibrate
由於船舶動力的非穩定性、船體的振動、尾軸密封裝置的密封作用及螺旋槳的不均勻伴流作用，導致尾軸振動，使得尾軸承潤滑油膜渦動。 -
This method makes it possible for investigating the unsteady nonlinear potential flow in a complicated environment with higher efficiency. the aerodynamic forces of a wing in couple motion of heave and pitch with ground effect are analyzed in detail based on the numerical result. it is shown that a thrust force exists when the wing is in heave motion
深入系統地分析了存在表面效應時機翼運動規律和氣動力之間的關系，研究結果表明，機翼升沉運動產生的推力與升沉速度幅值的平方成比例，推力和推進效率和振蕩頻率成反比；機翼的俯仰運動可以調節推力和推進效率，但是單純的俯仰運動不會產生推力。 -
This machine consists of bin, vibration chamber, coupling and motor. the vibration chamber is made up of eccentric wheel. rubber soft piece, main shaft and bearing. the adjustable eccentric hammering is transmitted to the centerline of main shaft by motor drive, and produce centrifugal force at unsteady state so as to change the strength of material and form vortex in the sieve. weghted regulator and amplitude can be adjusted as per different material and sieve mesh
本機由料斗、振蕩室、聯軸器、電機組成，振蕩電腦內由偏心輪、橡膠軟體、主軸、軸承組成，可調節的偏心重錘經馬達驅動傳到主軸中心線，在不平衡狀態下，產生離心力，使物料強度改變在篩內形成漩渦，重錘調節器和振幅大小可根據不同物料和篩網進行調節。
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