641 動圧型空気フォイル軸受の安定限界速度に対する設計変数の影響
詳細
This study aims at predicting the stability threshold speed of the horizontal rigid rotor supported in bump foil journal bearings, by using two model bearings, one of which corresponds to the bearing with an excessive static friction between the top and the bump foils and the other to the bearing without the friction. It is found from the modified stability charts that some of the design variables of the bearing, such as rigidity, attached angle and angular extent of top foil and stiffness of bump foil, have a perceivable effect on the speed of the rotor-bearing system.
