水潤滑軸受オーバハングロータの非線形振動(機械力学,計測,自動制御)

概要

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Using water lubricated bearings for turbo-machinery is useful for reducing bearing loss. It is important, however, to achieve rotor vibration reliability because the damping coeficient of the bearing that is placed on the far side of the overhung part is reduced. We conducted vibration tests on a motor-mounted rotor to understand the vibration characteristics of this type of rotors. We observed a jump phenomenon of vibration amplitude and sub-harmonic resonance in these tests. We considered that these phenomena were caused by the non-linear characteristics of the water lubricated bearings, and we verified this assumption by usintr numerical simulations. The calculated results agreed well with the measured results, and we learnt some methods for reducing the non-linear vibration.
社団法人日本機械学会の論文
2005-02-25