期刊
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
卷 62, 期 9, 页码 1520-1533出版社
SCIENCE PRESS
DOI: 10.1007/s11431-018-9429-4
关键词
angular misalignment; static characteristics; air journal bearing; finite different method
资金
- National Natural Science Foundation of China [11772244, 51421004]
- Natural Science Foundation of Shaanxi Province [2017JM5120]
- Fundamental Research Funds for the Central University
This paper studies the effect of angular misalignment on the static characteristics of rotating externally pressurized air journal bearing with four degrees of freedom (4-DOF). A clearance function is used to describe the film thickness of air journal bearings with angular misalignment along two perpendicular directions. The finite different method (FDM) and an iterative procedure are applied to solve the Reynolds equation and obtain the air film pressure distribution. Various eccentricity ratios and rotating speeds are taken into considerations for the comparisons of static performances of the air journal bearing under different tilt angles. The results show that the air film thickness, load capacity, stiffness, load moment, attitude angle and volume flow rate are affected greatly by the angular misalignment.
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