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

Table 3

Parameters of the test rig.

Parts	Parameters		Specifications
Shaft	Length (mm)		490.0
	Diameter (mm)		10.0
	Density (kg(m^3)^−1)		7850.0
	Young’s modulus (Gpa)		205.8
	Poisson ratio		0.3
Disk	Diameter (mm)		80.0
	Thickness (mm)		15.0
The sliding bearing	Stiffness coefficients		Damping coefficients
	(MN⋅m^−1)		(kN⋅s⋅m^−1)
The first bearing	kxx	49.513	cxx	200.21
	kxy	−29.591	cxy	21.507
	kyx	6.4475	cyx	702.16
	kyy	35.744	cyy	272.48
The second bearing	kxx	200.021	cxx	874.03
	kxy	−69.727	cxy	390.64
	kyx	51.759	cyx	361.34
	kyy	0.1	cyy	244.16