Effect of Hovering State Rotor Parameters on the Nonlinear Vibration of the Rolling Bearing System

doi:10.12068/j.issn.1005-3026.2018.09.011

Abstract

Abstract: Based on the model of the double disc rotor-rolling bearing system， a dynamic equation was established by using the finite element method， the vibration response of the rotor system was obtained by the numerical method， and the maneuver load was analyzed. The influence of eccentricity and maneuver load on the nonlinear vibration and bifurcation characteristics of the rotor system was analyzed， which provided theoretical guidance for researching the rotor dynamic system that is more in line with the actual coupling faults under complex working conditions. There are abundant nonlinear dynamic phenomena in the system near the double critical speed. With the increase of the maneuver load， the main resonance speed increases， and the vibration forms of the system tend to stabilize the single-period motion within the rotational speed range. The rotor system can not only produce 1/2 subharmonic resonance， but also produce some low frequency vibrations under some parameters.

Key words: hovering, maneuver load, rotor-rolling bearing system, nonlinear vibration, bifurcation

CLC Number:

U463.51

SUN Zhao-ning， LI Xiao-peng， LI Mu-yan， WEN Bang-chun. Effect of Hovering State Rotor Parameters on the Nonlinear Vibration of the Rolling Bearing System[J]. Journal of Northeastern University Natural Science, 2018, 39(9): 1266-1271.

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