傾いた軸を有する船尾管軸受の弾性流体潤滑

抄録

Numerical calculations were performed in the investigation of the elasto-hydrodynamic lubrication characteristics of a stern tube bearing; several main characteristic values were determined. When the stern tube bearings are not parallel to the propeller shaft, the magnitude of the maximum oil film pressure, generated in the bearing, increases significantly. The magnitude of the maximum oil film pressure generated is greatly affected by the attitude angle of the shaft. As the attitude angle of the shaft is varied between 90 and 180 degrees, the maximum oil film pressure gradually increases. If the eccentricity at the centre of the bearing, and the angle of the shaft centre relative to the bearing's centre, and the attitude angle of the shaft can be determined, then it is possible to quantitatively determine the maximum oil film pressure. This, by taking the elastic deformation of the bearing into account, as described in this paper.