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- Title
Numerical Analysis on the Static Performance of Gas Journal Bearing by Using Finite Element Method.
- Authors
Wang, Pengfeng; Li, Yuntang; Gao, Xiang; Ye, Yueliang; Li, Ruirui; Li, Xiaolu; Chen, Yuan; Jin, Jie; Zhang, Cong
- Abstract
In this paper, finite element method is used to calculate the static performance of gas journal bearing, in which rotation speed term is introduced into the stiffness matrix of linear triangular element to realize the performance calculation of the bearing with rotation speed. The results indicate that the average gas film thicknesses corresponding to the maximum load capacity and stiffness, and the minimum attitude angle increase with the growth of orifice diameter. Load capacity and stiffness significantly improved with the increase of rotation speed, eccentricity ratio and supply pressure when the bearing has thin average gas film thickness. Attitude angle increases with the growth of rotation speed, while the growth rate slows down or even decreases at high speed. The most effective way of reducing attitude angle is to increase supply pressure. It can be found that rotation speed affects attitude angle through changing gas pressure difference between two orifices, while other parameters have the same effect by changing gas pressure at orifice outlet. Article Highlights: Analyzing performances of gas journal bearings by solving Reynolds equation with FEM. Solving Reynolds equation with speed term using FEM. Investigating the effect of bearing parameters on attitude angle, stiffness, and load capacity.
- Subjects
GAS-lubricated journal bearings; FINITE element method; REYNOLDS equations; GAS-lubricated bearings; NUMERICAL analysis
- Publication
Nanomanufacturing & Metrology, 2024, Vol 7, Issue 1, p1
- ISSN
2520-811X
- Publication type
Article
- DOI
10.1007/s41871-023-00219-0