Reaction Torque of Gas Foil Journal Bearing with Misalignment

2018 6th International Conference on Mechanical Engineering, Materials Science and Civil Engineering

材料科学;机械制造;土木建筑工程

Zhenxing, Liu^1^2 ; Yanming, Wei^1^2 ; Ge, Wang^1^2 ; Yuntian, Cong^1^2 ; Lei, Chen^1^2

Beijing Institute of Control Engineering, Beijing, China^1

Beijing Engineering Research Centre of Efficient and Green Aerospace Propulsion Technology, Beijing, China^2

关键词: Assembly error;    Creep deformations;    Foil journal bearing;    Gas film thickness;    Gas foil bearing;    Lubricant performance;    Lubrication models;    Reaction torques;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/542/1/012015/pdf
DOI  :  10.1088/1757-899X/542/1/012015

来源: IOP

【 摘 要 】

In a rotor gas foil bearing system, zero misalignment can usually not be ensured for assembly errors or creep deformation of the base. The tilting attitude of the journal makes lubricant performance worse. To study the performance of a gas foil journal bearing with misalignment, effect of misalignment on gas film thickness is introduced into the lubrication model. The two typical misalignment attitudes of the journal were defined as radial tilting and tangential tilting. The results show that reaction torques increase with the tilting angle of the journal. A larger eccentricity leads to a larger reaction torque. This work provides a reference for prediction about the self-action of gas foil journal bearing for misalignment.