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Prediction Model of the Sound Transmission Loss of Honeycomb Panels for Railway Vehicles  

Kim, Seock-Hyun (강원대학교 기계메카트로닉스 공학부)
Paek, In-Su (강원대학교 기계메카트로닉스 공학부)
Lee, Hyun-Woo (강원대학교 기계메카트로닉스)
Kim, Jeong-Tae (홍익대학교 기계공학과)
Publication Information
Journal of the Korean Society for Railway / v.11, no.5, 2008 , pp. 465-470 More about this Journal
Abstract
Sound transmission characteristics are investigated on the honeycomb panels used for railway vehicles. Equivalent orthotropic plate model and equivalent mass law are applied to predict the sound transmission loss (STL) of the honeycomb panels. The predicted values of the STL are compared with the measured values. The reliability and the limitation of the prediction models are investigated. Coincidence effect and local resonance effect on STL are considered. The result of the study shows that the equivalent orthotropic plate model can be used as a good prediction model, if the local resonance frequency is properly applied. finally, ways to improve the severe STL drop by local resonance are proposed and the effect on the sound insulation performance is analysed.
Keywords
Honeycomb panels; Sound transmission loss; Equivalent orthotropic panel mode; Local resonance;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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