Model Reduction Methods for Rotor Dynamic Analysis: A Survey and Review

Table 1

Component contributions to rotor dynamic equation of motion; S = symmetric, SS = skew-symmetric, and US = unsymmetric.

	Mass (M)	Damping (C)	Gyroscopic (G)	Stiffness (K)
	(S)	(S/US)	(SS)	(S/US)
Shaft	⊗	⊗	⊗	⊗
Impeller	⊗		⊗
Gear	⊗		⊗	⊙ (US)
Fan	⊗		⊗
Disk	⊗		⊗
Coupling	⊗		⊗	⊙ (S)
Rolling Bearing				⊗ (US)
Journal Bearing		⊗ (US)		⊗ (US)
Squeeze Film Damper	⊙	⊗ (US)		⊗ (US)
Seals	○	⊗ (US)		⊗ (US)