A floating-slab track (FST) increases the interior noise and reduces the passenger’s acoustic comfort. A study combining experimental measurement and numerical simulation was conducted to reveal the characteristics of internal structure-borne noise on different tracks and improve riding comfort. A field measurement was taken to analyze the essential interior noise characteristics on different tracks with different speeds. A noise prediction model was built by combining a vehicle-track coupling model, the structural finite element method and the acoustic boundary element method to predict the interior noise and study the panel contribution for noise control. The results show that the sound pressure level (SPL) of FST is 5 – 10 dB higher than the ordinary monolithic track (OMT). The curve section is 1 – 4 dB larger than the straight section. In the range of 90 – 110 Hz and 135 – 150 Hz, the SPL of FST condition is higher than that of OMT condition, with a maximum difference of 12 dB. And the SPLs at five ISO positions all have peaks at 30 Hz and 90 Hz frequencies, and the sound pressure fluctuates wildly at 100 Hz. The vibration at 90 Hz is relatively violent, which leads to more significant noise, but at 110 Hz, that is small. At different frequencies, the contribution of the panels to the sound pressure in the carriage is different, and the acoustic contribution of these panels may be the opposite.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Structure-borne Noise Differences of Metro Vehicle Running on Different Tracks


    Additional title:

    KSCE J Civ Eng


    Contributors:
    Zhang, Yunfei (author) / Li, Li (author) / Zhu, Qian (author)

    Published in:

    Publication date :

    2023-09-01


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Metro Rail Detection Based on Vehicle-Borne LiDAR

    Zeng, Xiang / Leng, Binghan / Jiang, Guotao et al. | British Library Conference Proceedings | 2022


    Metro Rail Detection Based on Vehicle-Borne LiDAR

    Zeng, Xiang / Leng, Binghan / Jiang, Guotao et al. | Springer Verlag | 2022


    Crane capable of running on broken line tracks, non-parallel tracks and tracks on different planes

    ZHOU ZHIGUO / ZHANG ZHIHUA / WANG CHENGBAO et al. | European Patent Office | 2023

    Free access

    Tyne & Wear Metro shares tracks to Sunderland

    IHK Südöstl. Westfalen zu Arnsberg | IuD Bahn | 2001