Open AccessThe effect of lubricating oil temperature on the stability of rubbing rotor-bearing system
Author(s) -
Zhenyu Huang
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2254/1/012042
Subject(s) - rubbing , bearing (navigation) , nonlinear system , vibration , helicopter rotor , rotor (electric) , fault (geology) , bifurcation diagram , mechanics , bifurcation , amplitude , materials science , control theory (sociology) , physics , engineering , geology , computer science , mechanical engineering , acoustics , composite material , optics , control (management) , quantum mechanics , astronomy , artificial intelligence , seismology
Based on the interaction between oil film force and rub impact force of fault rotor bearing system, the nonlinear dynamic equation of rotor bearing system is established to explore the influence of lubricating oil temperature on system stability. The Runge-Kutta method was used to solve the dynamic equations to analyze the steady-state characteristics of the system. The bifurcation diagrams, frequency-waterfall diagrams, time-series diagrams, axis orbit diagrams, poincare map diagrams, frequency spectra dia-grams of the system at oil temperatures of 0 ° C, 40 ° C, 80 ° C were used to reveal the nonlinear behavior of the system. The results show that the temperature mainly affects the speed and amplitude of the oil whirl. When the speed increases to oil whirl, the vibration of the system is mainly oil whirl.