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Sound-Insulation Design of Aluminum Extruded Panel in Next-Generation High-Speed Train

차세대 고속철도 차량용 알루미늄 압출재의 차음 설계

  • Kim, Seock-Hyun (Dept. of Mechanical and Mechatronics Engineering, Kangwon Nat'l Univ.) ;
  • Seo, Tae-Gun (Dept. of Mechanical and Mechatronics Engineering, Kangwon Nat'l Univ.) ;
  • Kim, Jeong-Tae (Dept. of Mechanical and System Design Engineering, Hongik Univ.) ;
  • Song, Dal-Ho (Dept. of Railway Vehicle System Engineering, Woosong Univ)
  • 김석현 (강원대학교 기계.메카트로닉스공학과) ;
  • 서태건 (강원대학교 기계.메카트로닉스공학과) ;
  • 김정태 (홍익대학교 기계시스템디자인공학과) ;
  • 송달호 (우송대학교 철도차량 시스템학과)
  • Received : 2010.12.07
  • Accepted : 2011.02.15
  • Published : 2011.05.01

Abstract

Aluminum extruded panels are widely used instead of corrugated steel panels for weight reduction in high-speed trains. Of the layers in the train body, it makes the largest contribution to the sound insulation. However, compared with that of a flat panel with the same weight, the TL of the aluminum extruded panel is remarkably lower in the local resonance frequency band. We study aluminum extruded panels for next-generation 400-km/h trains. We investigate the problem of sound insulation and propose a practical method to improve the sound-insulation performance. The local resonance frequency region is increased by a modification of the core structure, and urethane foam is placed in the core. The effect on the sound insulation is verified by experiments. Finally, the improvement for the entire sound-transmission loss is estimated for the layered floor panels of express trains.

Keywords

Aluminum Extruded Panel;Local Resonance;Sound Transmission Loss

References

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Cited by

  1. Analysis Sound Insulation Performance of a Corrugated Steel Panel Through Modal Density vol.40, pp.12, 2016, https://doi.org/10.3795/KSME-A.2016.40.12.1061
  2. Contribution analysis of interior noise and floor vibration in high-speed trains by operational transfer path analysis vol.9, pp.8, 2017, https://doi.org/10.1177/1687814017714986