极大痛苦
发表于 2025-3-28 15:45:10
Unbalance and Balancing,ncing. Balancing is based on the assumptions of a linear relationship between input (unbalance) and output (vibration), namely,.While this linearity is the sole theoretical concept to explain how balancing works, practical methods of balancing include various alternatives based on operators’ experie
blithe
发表于 2025-3-28 22:19:38
Gyroscopic Effect on Rotor Vibrations,ating parts of the rotor system, such as the casing and foundation. A top spinning at a high speed whirls slowly in a tilted position. Similarly, a rotor of a rotating machine whirls while rotating around the driven shaft axis. The spinning top does not fall due to a moment, generated by the gyrosco
Infuriate
发表于 2025-3-29 00:07:25
Approximate Evaluation for Eigenvalues of Rotor-Bearing Systems, (damping characteristics as the real part and damped natural frequency as the imaginary part). The method consists basically of two steps: .This combination provides a simple model that helps understanding the phenomena of practical interest, such as the effects of the cross-stiffness of the bearin
古老
发表于 2025-3-29 05:35:11
http://reply.papertrans.cn/99/9828/982799/982799_44.png
闪光你我
发表于 2025-3-29 11:07:19
Bridge Between Inertial and Rotational Coordinate Systems,structure vibration formulated in a rotating coordinate system. The equations of motion for rotor vibration discussed hitherto have been based on the description concerning the absolute complex displacement . = . + . measured in an inertial (fixed, stationary) coordinate system. This description is
柏树
发表于 2025-3-29 13:02:24
Vibration Analysis of Blade and Impeller Systems,a rotating structure may be analyzed using the 3-D finite element method and classified by the number of the nodal diameters or circular nodal modes. These results are represented in the rotational coordinate system. The difference between the inertial coordinate system fixed to the stationary side
痛苦一下
发表于 2025-3-29 16:36:37
Stability Problems in Rotor Systems,fness and thermal unbalance behavior. Though a rotor should rotate in a stable manner in a rotation test, problems are encountered in some cases. Most of the problems are related to unbalance, against which the countermeasure is balancing. However, more serious problems may occur that cannot be solv
坦白
发表于 2025-3-29 22:55:15
Rotor Vibration Analysis Program: MyROT,nation of beam elements according to finite element modeling , termed 1D-FEM, which is discretized by defining the mass, stiffness and damping matrices according to the actual geometry of the rotating shaft. These matrices are applied to calculations of natural frequencies, complex eigenvalues for s
Diverticulitis
发表于 2025-3-30 00:28:14
http://reply.papertrans.cn/99/9828/982799/982799_49.png
troponins
发表于 2025-3-30 07:18:17
http://reply.papertrans.cn/99/9828/982799/982799_50.png