Browse > Article
http://dx.doi.org/10.7782/JKSR.2013.16.1.020

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

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)
Publication Information
Journal of the Korean Society for Railway / v.16, no.1, 2013 , pp. 20-25 More about this Journal
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.
Keywords
Sound transmission loss; Finite element method; Extruded aluminum panel; Boundary condition; Damping loss factor;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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.   과학기술학회마을   DOI   ScienceOn
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.   과학기술학회마을
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.   DOI   ScienceOn
6 F. Fahy (1989) Sound intensity, Chapman & Hall, London.