The preload-dependent dynamic stiffness of a primary suspension isolator on a high-speed tilting bogie is examined via measurements and modelling within an audible frequency range. The stiffness is found to depend strongly on both frequency and preload. The former displays some resonance phenomena, such as stiffness peaks and troughs, while the latter exhibits a steep low-frequency stiffness increase in addition to an anti-resonance peak shifting to a higher frequency with increased preload. The problems of simultaneously modelling the preload and frequency dependence are removed by adopting a frequency-dependent waveguide approach, assuming incompressible rubber with an Abel operator kernel as its shear relaxation function. The preload dependence is modelled by a non-linear shape factor based approach, using a globally equivalent preload configuration. All the translational stiffnesses are modelled, including the vertical, longitudinal and lateral directions, and the vertical stiffness results are compared to those of measurements in a specially designed test rig. Good agreement is obtained for a wide frequency domain - covering 100-600 Hz - using a minimum number of parameters and for a wide preload domain - from vanishing to the maximum in service, 90 kN.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Audible-frequency stiffness of a primary suspension isolator on a high-speed tilting bogie


    Contributors:
    Kari, L. (author)


    Publication date :

    2003


    Size :

    16 Seiten, 30 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English







    Bogie primary suspension device

    QIN LANG / CAI CHAO / DENG XIAOXING et al. | European Patent Office | 2020

    Free access

    Active tilting device, control method, bogie suspension system and railway vehicle

    GONG YANJUN / YANG XIN / FENG YONGHUA et al. | European Patent Office | 2020

    Free access