Influences of Hydrodynamic Forces on the Identification of the Rotor-Stator-Rubbing Fault in a Rotating Machinery

Table 1

Parameters of the rotor-stator system for the simulations.

Shaft parameters	Value and units	Bearing stiffness	Value and units
Length of the shaft	780 mm	Shaft stiffness ()	Nm^-1
Shaft diameter	10 mm	Stator stiffness ()	Nm^-1
Disc inner-outer radius ()	0.05-0.055 mm	Damper	200 ns/m
Friction coefficient ()	0.56	Restitution coefficient ()	0.7
Young modulus ()	N/m^2	Poisson ratio ()	0.3
Fluid parameters (water)	Value and units	Mass (M)	16.845 kg
Fluid density ()	1004 kg/m^3	Eccentricity mass ()	0.003 kg·m
Fluid speed ()	4.8522 rad/s	Motor moment of inertia ()	0.36 kg·m^2
Amplitude ratio (X0/l)	0.1666	Container width ()	0.3 m
Fluid natural frequency ()	6.0084 rad/s	Disc moment of inertia ()	0.1861 kg·m^2