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http://dx.doi.org/10.5762/KAIS.2013.14.7.3197

Damping Characterization of the Double-skin Aluminum Extruded Panels for Rolling Stock Carbody  

Kang, Gil-Hyun (Hyundai Rotem Co.)
Kim, Chul-Su (Dept. of Railway Vehicle System Engineering, KNUT)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.14, no.7, 2013 , pp. 3197-3202 More about this Journal
Abstract
When car builder designs the large carbody structure of railway vehicles, it is necessary to optimize the damping characteristics through the analysis of structure borne noise such as sound pressure level(SPL). This paper is a study on the structure borne noise analysis by characterizing the damping of double skin aluminum extruded panels for rolling stock carbody. The normalized SPL was calculated based on the simple source theory using measured mechanical mobility parameters from vibration tests(i.e. point, transfer and modal mobility). The reduced SPL was predicted by using finite element method by applying loss factor of damping material into laminated shell elements. It was found out that the damping material coated on the panels like underframe, which part is seriously affected by vibration during train run, took effect to reduce noise level.
Keywords
Double Skin Aluminum Extruded Panels; Modal Mobility; Normalized Sound Pressure Level; Rolling Stock Carbody;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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