2026-10-11T21:29:38Z https://www.scidb.cn/oai

10.57760/sciencedb.Tribology.00033 2026-06-22T15:41:43Z

2026-06-22 Experimental Static and Dynamic Characteristics ofMulti-layer Gas Foil Thrust Bearing doi:10.57760/sciencedb.tribology.00033 en Gas foil bearings are widely used in the field of national defence because of their advantages of high speed and low friction. 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. The experimental results show that the stiffness and damping increase with the increase of preload and excitation force amplitude. As the frequency increases, the damping decreases, and the increase in frequency changes the phase of the hysteresis curve. The influence of gas film formation on bearing stiffness and damping is further discussed in the experiment with rotating. The experimental results show that the stiffness and damping of bearing with gas film formation are lower than those without rotating because of the low gas viscosity, bearing capacity and damping. The research results of this study provide a valuable reference for optimizing the structure of multi-layer gas foil thrust bearings. Multi-layer gas foil thrust bearing; Static characteristics; Dynamic characteristics; Stiffness damping; Hysteresis curve HU Yang Zhang Yaoyun Li Shiqiang Luo Xinyang PUBLIC https://creativecommons.org/licenses/by-nc-nd/4.0/ dataset Science Data Bank