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.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Nonlinear Dynamic Behavior Analysis of Dual-Rotor-Bearing Systems with Looseness and Rub–Impact Faults


    Contributors:
    Lu, Kuan (author) / Guo, Dong (author) / Zhu, Weidong (author) / Jin, Yulin (author) / Cheng, Hui (author) / Gu, Xiaohui (author) / Fu, Chao (author)

    Published in:

    AIAA Journal ; 61 , 11 ; 5164-5175


    Publication date :

    2023-08-01


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    LOOSENESS DETECTION APPARATUS AND LOOSENESS DETECTION PROGRAM

    SUNAYAMA YUKI | European Patent Office | 2023

    Free access


    Looseness screw device

    ZHEN YINGXIA / LI ZHIJUN / LI ZHILIANG | European Patent Office | 2023

    Free access

    Rotor-Bearing Analysis for Turbomachinery Single- and Dual-Rotor Systems

    Hsiao-Wei Chiang / Chih-Neng Hsu / Shun-Hsu Tu | AIAA | 2004