In:
Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics, SAGE Publications, Vol. 232, No. 4 ( 2018-12), p. 446-456
Abstract:
The rotor system supported by rolling bearings usually provides a resonance effect due to the nonlinearity of bearings. In this paper, the causes of these anomalous resonance effects are discussed by establishing coupling dynamic model of the flexible rotor-roller bearings system. The 4-degrees of freedom (DOF) Timoshenko finite element and the free interface modal synthesis technique are used to model the elastic rotor. Then, a piece-wise flexible rotor model coupling with a 5-DOF dynamic bearing model is obtained by fixing the inner race to rotor. And waterfall plots are mainly obtained using the method of adaptive Runge-Kutta. Comparisons are made between the simulated response of the rotor-simplified bearing and rotor-bearing coupling models. Firstly, the vibration of cage can cause supercritical anomaly vibration except for the subcritical vibration induced by the variable compliance vibration. Secondly, the vibration amplitude of the coupling model is lower than the rotor-nonlinear springs model.
Type of Medium:
Online Resource
ISSN:
1464-4193
,
2041-3068
DOI:
10.1177/1464419317745702
Language:
English
Publisher:
SAGE Publications
Publication Date:
2018
detail.hit.zdb_id:
2032771-7
