In order to analyze and make the criterion of carbody primary hunting instability, the relationship among equivalent conicity, vehicle speed and hunting frequency has been analyzed firstly. To simulate different vehicles’ carbody hunting instability, this article analyzed the lateral acceleration signals of a simulated full-scale vehicle under several conditions. Through these data, an amendatory method for calculating centroid frequency of vehicle lateral vibration is presented and an index named power concentration ratio (PCR) is presented for distinguishing carbody primary hunting and the data with larger amplitude is screened under the ride index. According to the statistical law, the criterion of carbody primary hunting instability is summarized. Research result shows that the there is a vehicle carbody hunting instability while the lateral acceleration with filtered 0.5–3 Hz exceeds 0.5 m/s2 for six times serially in 15 s. The criterion is shown to be valid through the field test data.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Evaluation Methods of Carbody Hunting Instability of Railway Vehicles


    Additional title:

    Lect.Notes Mechanical Engineering


    Contributors:
    Klomp, Matthijs (editor) / Bruzelius, Fredrik (editor) / Nielsen, Jens (editor) / Hillemyr, Angela (editor) / Wu, Yi (author) / Zeng, Jing (author) / Wang, Qunsheng (author) / Luo, Ren (author) / Zhu, Bin (author)

    Conference:

    The IAVSD International Symposium on Dynamics of Vehicles on Roads and Tracks ; 2019 ; Gothenburg, Sweden August 12, 2019 - August 16, 2019



    Publication date :

    2020-02-13


    Size :

    7 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




    Evaluation Methods of Carbody Hunting Instability of Railway Vehicles

    Wu, Yi / Zeng, Jing / Wang, Qunsheng et al. | TIBKAT | 2020




    Carbody elastic vibrations of high-speed vehicles caused by bogie hunting instability

    Wei, Lai / Zeng, Jing / Chi, Maoru et al. | Taylor & Francis Verlag | 2017


    Design and Strength Evaluation of Laser-Welded Carbody for Railway Vehicles

    Luo, Qi / Zhang, Chunyu / Fang, Ziwen et al. | British Library Conference Proceedings | 2019