Secondary suspension system is a core component of a suspended monorail vehicle (SMV), which plays a vital role in suppressing the car-body vibrations. This article aims to investigate the vibration isolation performance of an external secondary system (ESSS) for the SMV. Firstly, the structural features and mechanical mechanism of the ESSS are elaborated, which are compared with those of an existing internal secondary suspension system (ISSS) in the SMV. Then, an effective analysis method for the vehicle-track beam interaction of the suspended monorail system (SMS) is established based on the rigid-flexible coupling dynamics theory, in which the main modal information of the track beam is considered. Furtherly, applying the established analysis method, the vehicle-track beam vibrational responses between the ISSS and ESSS are compared under the local irregularity of beam-end junction and random track irregularity, and the superiorities of adopting the ESSS are revealed. Finally, by comprehensively considering the vehicle-track beam vibrational responses, several crucial parameters of the ESSS are selected appropriately. Results show that the ESSS has a significant advantage in isolating the high-frequency vibrations of the SMV compared with the existing used ISSS; simultaneously, it could also effectively decrease the track beam vibration. To guarantee good vehicle riding comfort, the vertical stiffness and damping with the ESSS are recommended to be 0.05∼0.2 MN/m and 10∼30 kN·s/m, respectively.

    Highlights

    ➢ Structural features and mechanical mechanisms of an effective ESSS for the SMV are introduced.

    ➢ A high-efficiency analysis method for vehicle-track beam interaction of the SMS is established.

    ➢ By a comparison with the commonly used IEEE, the advantages and significance of the ESSS are revealed

    ➢ Several crucial design parameters of the SMV with ESSS are selected appropriately.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    An effective secondary suspension system for isolating the high-frequency vibrations of suspended monorail vehicle running on a flexible track beam


    Additional title:

    VEHICLE SYSTEM DYNAMICS
    Q. HE ET AL.


    Contributors:
    He, Qinglie (author) / Li, Shihui (author) / Xu, Xin (author) / Cai, Chengbiao (author) / Zhu, Shengyang (author) / Zhai, Wanming (author)

    Published in:

    Vehicle System Dynamics ; 63 , 3 ; 475-493


    Publication date :

    2025-03-04


    Size :

    19 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Influence Analysis of Suspended Monorail Track Beam on Vehicle Running Stability

    XU Guojie / ZHANG Zhihua / BO Junhua | DOAJ | 2024

    Free access

    Monorail suspension bogie and monorail suspension vehicle

    ZHOU XIAOJIANG / ZHAO HAIQIN / WU TONG et al. | European Patent Office | 2024

    Free access

    Monorail hanging type bogie, monorail vehicle and track beam structure

    GUO QINGSHENG / ZHAO BINNA / HUANG XIAOQING et al. | European Patent Office | 2023

    Free access

    Bogie suspension beam suitable for monorail suspension vehicle

    WANG BOMING / CHEN YANG / MA DENGFENG et al. | European Patent Office | 2020

    Free access

    Train suspension device and suspended monorail train

    PU QUANWEI / SHEN LONGJIANG / LI XIAOYAN et al. | European Patent Office | 2024

    Free access