Experimental Static and Dynamic Characteristics ofMulti-layer Gas Foil Thrust Bearing

In recent years, the multi-layer gas foil thrust bearing has attracted much attention due to its good environmental adaptability and greater deformation adaptability. This study systematically studied the influence of these factors including load, frequency and amplitude of excitation force, preload force and speed on the static and dynamic performance of bearings.

In the experiment of exploring the static stiffness of bearing, the stiffness of bearing shows a nonlinear increasing trend with the increase of load. The reliability of the calculation method is verified from the time domain and frequency domain in the experiment without rotating, and the dynamic characteristics under different preload and vibration amplitude are analysed. In addition, the influence of different working conditions on energy dissipation is discussed by studying the change of hysteresis curve area.