Experimental and theoretical analysis on the nonlinear rotor-dynamic performances and vibration characteristics of a novel bearing-rotor system

The lubrication performances, dynamic behaviors and vibration characteristics of a novel water-lubricated bearing-rotor coupling system under different lubrication state are investigated. The effects of operation parameters on static performances, dynamic properties and response analysis of such strong coupling system are revealed. The water-lubricated bearing-rotor test bench is designed and constructed. Tested water-lubricated bearings with different structures and geometries are manufactured. The tribo-dynamics and vibration analysis of the bearing are carried out. The experimental results are in good agreement with the theoretical analysis.