Dynamic behavior of geared rotors

This paper is concerned with the dynamic behavior of geared rotor systems s upported by squeeze film dampers, wherein coupled bending torsion vibration s occur. Considering the imbalance forces and gravity, it is shown that gea red rotors exhibit chaotic behavior due to nonlinearity of damper forces. T he route to chaos in such systems is established. In geared rotor systems, it is shown that torsional excitation can induce lateral vibrations. It is shown that squeeze film dampers can suppress large amplitudes of whirl aris ing out of torsional excitation.