Nonlinear Dynamic Analysis of Rotor-Bearing System with Cubic Nonlinearity

Table 1

Calculation parameters of the rotor system.

Parameter	Value
Equivalent mass at disk, (kg)	32.1
Equivalent mass at the left bearing, (kg)	4.0
Equivalent mass at the right bearing, (kg)	4.0
Damping coefficient at the disk, (Ns/m)	2100
Damping coefficient at the bearing (Ns/m)	1050
Linear stiffness coefficient of shaft, k (N/m)	2.5 × 10^7