Use of nonlinear journal-bearing impedance descriptions to evaluate linear analysis of the steady-state imbalance response for a rigid symmetric rotor supported by two identical finite-length hydrodynamic journal bearings at high eccentricities

Jean-Claude Luneno (1) , Jan-Olov Aidanpää (1)

1 LUT - Luleå University of Technology = Luleå Tekniska Universitet

This paper concerns the investigation of validity limits of linear models in predicting rotor trajectory inside the bearing clearance for a rigid symmetric rotor supported by two identical journal bearings operating at high eccentricities.

Mots clés: Nonlinear model; Linear model; Journal bearing; Impedance descriptions; Dynamics; Imbalance response; Rotor

Jean-Claude Luneno, Jan-Olov Aidanpää. Use of nonlinear journal-bearing impedance descriptions to evaluate linear analysis of the steady-state imbalance response for a rigid symmetric rotor supported by two identical finite-length hydrodynamic journal bearings at high eccentricities. Nonlinear Dynamics, 2010, 62 (1-2), pp.151-165. ⟨10.1007/s11071-010-9706-6⟩. ⟨hal-00586526⟩