The Lubrication Analysis of Air-Lubricated Tilting Pad Joumal Beadng by Direct Method

공기윤활 틸팅패드 저어널 베어링의 윤활특성해석

Air-Lubricated tilting pad journal bearing that has high stability is analyzed by using the direct method, and this bearing is usually used to need high precision. The pressure that supports the shaft is occured by the differences between the shaft and pads radii of curvatures. So the characteristics of load capacity for their variable values is important. In this paper the load capacity is compared with some of the eccentricity ratio values. The large load oapacity comes form large eccentricity ratio, high bearing number and high preload. But if the preload becomes too high, the shaft comes into contact with the pads. Stiffness and damping coefficients are compared with some of the preload, too. The coefficients decreased along compressibility number with constant load.