DOI QR코드

DOI QR Code

A Method of Analysis to Predict Sound Transmission Loss of an Extruded Aluminum Panel for Use on Railway Vehicles

철도차량용 알루미늄 압출재의 음향 투과손실 예측에 관한 연구

  • Kim, Kwanju (Department of Mechanical System Design Engineering, Hongik University) ;
  • Lee, Jun-Heon (Department of Mechanical Engineering, Hongik University) ;
  • Kim, Dae-Yong (Department of Mechanical Engineering, Hongik University) ;
  • Kim, Seock-Hyun (Department of Mechanical and Mechatronics Engineering, Kangwon National University)
  • Received : 2012.06.26
  • Accepted : 2012.12.18
  • Published : 2013.02.28

Abstract

The frame elements of modern high speed trains are typically fabricated with extruded aluminum panels. However, the sound transmission loss (STL) of extruded aluminum panels is less satisfactory than flat panels with the same surface density. This study proposes a method for prediction of the sound transmission loss of extruded aluminum panels using finite element analysis. The panel is modeled by finite element analysis, and the STL is calculated using a measure of Sommerfeld radiation at the specimen surface, boundary conditions, and the internal loss factor of the material. In order to verify the validity of the predicted value, intensity transmission loss was measured on the aluminum specimen according to ASTM E2249-02. The proposed method of analysis will be utilized to predict the sound insulation performance of extruded aluminum panels for railway vehicles in the design stage, and to establish measures for their improvement.

Acknowledgement

Supported by : 한국연구재단

References

  1. S.L. Seo, J.S. Kim, S.H. Cho (2012) A study on the economic feasibility of hybrid body shell made of sandwich composite plate, Journal of the Korean Society for Railway, 15(2), pp. 97-103. https://doi.org/10.7782/JKSR.2012.15.2.097
  2. S.H. Kim, I.S. Paek, H.W. Lee, J.T. Kim (2008) Prediction model of the sound transmission loss of honeycomb panels for railway vehicles, Journal of the Korean Society for Railway, 11(5), pp. 465-470.
  3. D.A. Bies, C.H. Hansen (1988) Engineering noise control, Unwin Hyman Ltd, London.
  4. M. Heckl (1960) Untersuchungen an orthotropen platten, ACUSTICA, 10, pp. 109-115.
  5. G. Xie, D.J. Thompson, C.J.C. Jones (2006) A modeling approach for the vibroacoustic behavior of aluminum extrusions used in railway vehicles, Journal of Sound and Vibration, 293, pp. 921-932. https://doi.org/10.1016/j.jsv.2005.12.015
  6. F. Fahy (1989) Sound intensity, Chapman & Hall, London.

Cited by

  1. Damping Characterization of the Double-skin Aluminum Extruded Panels for Rolling Stock Carbody vol.14, pp.7, 2013, https://doi.org/10.5762/KAIS.2013.14.7.3197
  2. Analysis on Applicability of LTE-R in Urban Railway Tunnel Environment vol.64, pp.12, 2015, https://doi.org/10.5370/KIEE.2015.64.12.1796