Instability Threshold of a Rigid Rotor-Tilting PadJournal Bearings System

[摘要] The stability of a rigid rotor supported on radial tilting pad journal bearings is analysed. Thisstudy has been tackled both for small unbalance values by linearising the equations ofmotion, and also in the case where, because of the high unbalance value, the rotor axisdescribes orbits with an amplitude such that the system's non-linearity cannot be ignored. Inboth cases the system's stable operation maps have been obtained and verified throughnumerical integration of the differential equations of motion.

[学科分类] 力学，机械学