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Acoustic optimization design for the laying schemes on the composite roof structure of high-speed train

Author

Listed:
  • Leixin Huang
  • Xinbiao Xiao
  • Qi Wang
  • Ruiqian Wang
  • Jie Zhang
  • Yang Liu

Abstract

If the weak sound insulation in the roof during high-speed train travel through tunnels can be addressed by adjusting the order of materials, this will meet design requirements for both economy and lightweight construction. This paper studies this problem. First, a prediction model for sound transmission loss (STL) of the roof was established to investigate the impact of different material placement schemes and optimize their arrangement. Then, the optimal placement schemes between the roof and floor were compared using STL tests. Finally, this study also examined how an optimal scheme mitigates power radiation from the roof into the train interior under typical mechanical excitations. The results indicate that the optimal laying scheme for the roof differs from that of the floor. By placing sound absorption materials on the inner side of aluminium extrusion and sound insulation materials on decorative plate, it effectively enhances vibro-acoustic characteristics of the roof.

Suggested Citation

  • Leixin Huang & Xinbiao Xiao & Qi Wang & Ruiqian Wang & Jie Zhang & Yang Liu, 2025. "Acoustic optimization design for the laying schemes on the composite roof structure of high-speed train," International Journal of Rail Transportation, Taylor & Francis Journals, vol. 13(5), pages 968-987, September.
    • Handle: RePEc:taf:tjrtxx:v:13:y:2025:i:5:p:968-987
    DOI: 10.1080/23248378.2024.2400161
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