1411 Analysis on The Translational-Rotational Coupled Vibration of Gas-Lubricated Bearing with Herring-bone Groove

Abstract

The dynamic stability of gas-lubricated journal bearing with Herring-bone groove are investigated. The pressure distribution which is generated in compressible fluid at the gap in the bearing is caluculated. The equation of motion is derived using the fluid force and fluid moment acting on journal which is caluculated from the pressure distribution. On the basis of the derived equation, the numerical simulation of the dynamic behavior of the journal is performed. The vibrational mode and the stability of the behavior of the journal are investigated. Finally parameter studies are discussed.