An In Situ Vibration Monitoring for a Special-Structure Bearing

Water-lubricated hydro-hybrid bearings are widely used in the secondary system of the nuclear power plant. The article takes the radial clearance as the research focus of influencing factors. The influences of the clearance on static and dynamic parameters are explored. Results indicate that the radial clearance has remarkable influences on all the static characteristics, while it has significant influences on the main stiffness coefficients (SCs) but little influence on the cross-SCs. It has little influence on the main damping coefficients (DCs), while it has significant influences on the cross DCs. The rationality and correctness of the lubrication models are verified. The investigation has guiding significance on the optimum design for such bearings.