An Identification Method for the Unbalance Parameters of a Rotor-Bearing System

Table 1

Parameters of the numerical model.

Parts	Parameters		Specifications
Shaft	Length (mm)		425.0
	Diameter (mm)		10.0
	Mass (kg)		4
	Diametral inertia (kg⋅m^2)		0.0046
	Polar inertia (kg⋅m^2)		0.00786
Disk	Diameter (mm)		74.0
	Thickness (mm)		25.0
The sliding bearing	Stiffness coefficients		Damping coefficients
	(MN⋅m^−1)		(kN⋅s⋅m^−1)
The first bearing	kxx	24.10	cxx	71.30
	kxy	−3.19	cxy	34.20
	kyx	72.20	cyx	48.30
	kyy	45.40	cyy	55.40
The second bearing	kxx	25.80	cxx	72.90
	kxy	−3.78	cxy	38.00
	kyx	81.20	cyx	52.00
	kyy	52.60	cyy	63.60