NON-LINEAR OSCILLATIONS OF THE ROTOR ON BALL BEARINGS AT
THE GIVEN VIBRATION OF THE BASIS
S.V. Filipkovsky
The model of rotor oscillations on two nonlinear ball bearings is obtained. Gyroscopic moments of a disk, nonlinear elasticity and a damping of ball-bearings are taken
into account. Numerical iterative methods are
applied for the analysis of the obtained system. Amplitude-frequency
characteristics of a rotor and the instability regions of periodic duties are
investigated at simultaneous act of the disk unbalance and the kinematic
excitation by the given vibration of support. Near to a resonance of lateral oscillations the rotor
has a drooping characteristic, and near to a resonance of longitudinal
oscillations - a flat characteristic.
Key words: rotor, ball-bearings, damping, unbalance, the kinematic excitation of oscillations,
amplitude-frequency characteristic.