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http://dx.doi.org/10.5050/KSNVE.2013.23.7.605

Characteristics of Vibration and Sound Radiated from Rails of Concrete Slab Tracks for Domestic High Speed Trains  

Ryue, Jungsoo (School of Naval Architecture and Ocean Engineering, University of Ulsan)
Jang, Seungho (Echo-Rail Research Division, Korea Railroad Research Institute)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.23, no.7, 2013 , pp. 605-616 More about this Journal
Abstract
An important source of noise from railways is rolling noise caused by wheel and rail vibrations induced by acoustic roughness at the wheel-rail contact. In the present paper, characteristics of rail vibration and radiated sound power from concrete slab tracks for domestic high speed train(KTX) is investigated by means of a numerical method. The waveguide finite element and boundary element are combined and applied for this analysis. The concrete slab track is modelled simply with a rail and rail pad regarding the concrete slab as a rigid ground. The wave types which contribute significantly to the rail vibration and radiated noise are identified in terms of the mobility and decay rates. In addition, the effect of the rail pad stiffness on the radiated power is examined for two different rail pad stiffnesses.
Keywords
Concrete Slab Track; Mobility; Decay Rate; Waveguide Finite Element Method;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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