Vibration Characteristics and Simulation Verification of the Dual-Rotor System for Aeroengines with Rub-Impact Coupling Faults

Table 5

Parameter setting of the rub-impact model.

Parameter	I	II	III	IV
Rub-impact stiffness	1 × 10^6 N/m	7 × 10^6 N/m	3 × 10^7 N/m	0
Friction coefficient	0.4	0.4	0.6	0
Rub-impact clearance	1×10^−7 m	1×10^−6 m	1×10^−7 m	0
LPC unbalance	500 g mm	500 g mm	500 g mm	500 g mm
HPC unbalance	500 g mm	500 g mm	500 g mm	500 g mm