摘要
In view of an entire dynamic model of tilting-pad journal bearing(TPJB) in which the pads swing and vibrate along geometric direction of preload, a TPJB of elastic and damped pivots was designed and manufactured. Vibration experiments were carried out under the conditions of different rotor bending stiffness and oil supply pressure to find out the relationship between the new bearing's vibration depression effect and other dynamic parameters of the rotor. The result shows that critical amplitudes can be efficaciously reduced while system's stability can be remarkably improved by this bearing. Besides, the bearing's effect of vibration depression weakens as the rotor bending stiffness increases, but heightens it as the oil supply pressure increases.
In view of an entire dynamic model of tilting-pad journal bearing（TPJB） in which the pads swing and vibrate along geometric direction of preload, a TPJB of elastic and damped pivots was designed and manufactured. Vibration experiments were carried out under the conditions of different rotor bending stiffness and oil supply pressure to find out the relationship between the new bearing＇s vibration depression effect and other dynamic parameters of the rotor. The result shows that critical amplitudes can be efficaciously reduced while system＇s stability can be remarkably improved by this bearing. Besides, the bearing＇s effect of vibration depression weakens as the rotor bending stiffness increases, but heightens it as the oil supply pressure increases.
基金
Project(2012CB026000)supported by the National Basic Research Program of China(973 Program)
关键词
振动特性
转子系统
滑动轴承
阻尼
弹性
可倾瓦
支点
弯曲刚度
tilting-pad journal bearing of elastic and damped pivots elastic shims damping stiffness oil supply pressure
