The nonlinear dynamic behaviors of dual-rotor-bearing systems with looseness and rub–impact faults are discussed in this paper. The dual-rotor-bearing system with looseness and rub–impact coupling faults is established by the finite element method. The component mode synthesis (CMS) and proper orthogonal decomposition (POD) methods are introduced. The CMS and POD methods are used to reduce the original rotor system model, and the efficiency of the order reduction method is verified by comparing the dynamic behaviors of the original and reduced systems. The frequency spectrum and amplitude–frequency behaviors of rotor systems are studied. The results can provide qualitative guidance to structural design optimization of large rotating machines and prior information for looseness and rub–impact coupling faults.
Nonlinear Dynamic Behavior Analysis of Dual-Rotor-Bearing Systems with Looseness and Rub–Impact Faults
AIAA Journal ; 61 , 11 ; 5164-5175
2023-08-01
12 pages
Article (Journal)
Electronic Resource
English
STABILITY AND NON-LINEAR RESPONSES OF A ROTOR-BEARING SYSTEM WITH PEDESTAL LOOSENESS
Online Contents | 2001
|LOOSENESS DETECTION APPARATUS AND LOOSENESS DETECTION PROGRAM
European Patent Office | 2023
|Rotor-Bearing Analysis for Turbomachinery Single- and Dual-Rotor Systems
Online Contents | 2004
|