COUPLED DYNAMICS OF A ROTOR JOURNAL BEARING SYSTEM EQUIPPED WITH THRUST-BEARINGS

The rotordynamic coefficients of fixed-pad thrust bearing are introduc ed and calculated by using the out-domain method, and a general analys is method is developed to investigate the coupled dynamics of a rotor equipped with journal and thrust bearings simultaneously. Consideratio ns include the effects of static tilt parameters of the rotor on rotor dynamic coefficients of thrust bearing and the action of thrust bearin g on system dynamics. It is shown that thrust bearing changes the load distribution of journal bearings and the static deflection of the rot or and delays the instability of the system considerably in lateral sh aft vibration. (C) 1995 John Wiley & Sons, Inc.