STUDY ON THE NONLINEAR DYNAMIC PROPERTIES OF RUBBING ROLLING BEAR-ROTOR-STATOR BOX

摘要

Based on the test apparatus of some aeroengine, nonlinear dynamic properties, especially the bifurcation and chaos behaviors of rolling bear-rotor-stator box with local rubbing are studied by means of numerical stimulation in this paper. Abundant dynamic behaviors of rotor are revealed by the diagrams displaying bifurcation and chaos behaviors, such as Poincare mapping, bifurcation diagram, phase plane plots, locus trajectory, as well as amplitude spectrum. Some theoretic results are qualitatively consistent with the results from the test.