2002•Journal of the Korean Society for Precision EngineeringOpen access

A Study on the Vibration Characteristics of Rotor System with Fluid Film Bearing

Seong-Hwan Park, O Taek-Yeol

Abstract

The dynamic behavior of rotor-bearing system has been investigated using finite element method. A procedure is presented for dynamic modeling of rotor-bearing system which consists of shaft elements, rigid disk, flexible bearing and support structure. A finite element model including the effects of rotary inertia, shear deformation, gyroscopic moments is developed. Linear stiffness and damping coefficients are calculated for 2 lobe sleeve bearing. The whirl frequency, mode shape, stability and unbalance response of rotor system including effects of bearing coefficient and support structures are calculated.

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Key concepts: Bearing (navigation), Finite element method, Vibration, Rotor (electric), Helicopter rotor, Structural engineering, Rotary inertia, Stiffness