Abstract
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.
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