Structural Optimization Analysis of Dynamic Pressure Gas Foil Thrust Bearing

doi:10.3901/JME.2025.05.308

Abstract

Abstract: In order to study the influence of wedge-shaped surface structure parameters of dynamic gas thrust foil bearing on bearing capacity performance and obtain bearing wedge-shaped surface structural parameters with high bearing capacity, an optimization method of dynamic pressure gas thrust foil bearing is presented. Firstly, the bearing support region model is discretized along the radius direction. Based on Reynolds equation, a one-dimensional bearing support region model is established, and the optimized one-dimensional model structural parameters under different radii are combined into two-dimensional model parameters. Then, the optimized pressure distribution in the support area of rigid bearing is obtained through simulation analysis, and the bracing stiffness is designed by the rigid pressure distribution, so as to optimize flat foils and corrugated foils. The results show that the bearing capacity of dynamic pressure gas thrust foil bearing is greatly improved by using this method. This optimization method provides a reference for structural design optimization of gas thrust foil bearing.

Key words: foil bearing, thrust bearing, optimization method, support stiffness, bearing capacity

CLC Number:

V229
TH133

WANG Yongliang, LIN Zhenxia, ZHANG Kuo, ZHANG Mingfeng, LIU Yanpeng, CUI Ying. Structural Optimization Analysis of Dynamic Pressure Gas Foil Thrust Bearing[J]. Journal of Mechanical Engineering, 2025, 61(5): 308-322.

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