Vibration characteristics of rotor system with tilting-pad journal bearing of elastic and damped pivots  

作　　者：刘思涌 肖忠会 闫志勇 陈朱杰 

机构地区：[1]Department of Mechanics and Engineering Science, Fudan University [2]Shenyang Blower Works Group Co. Ltd.

出　　处：《Journal of Central South University》2015年第1期134-140,共7页中南大学学报（英文版）

基　　金：Project(2012CB026000)supported by the National Basic Research Program of China(973 Program)

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.

关 键 词：tilting-pad journal bearing of elastic and damped pivots elastic shims damping stiffness oil supply pressure 

分 类 号：TH133.31[机械工程—机械制造及自动化] TH113.1