Finite element model of ballasted railway with infinite boundaries considering effects of moving train loads and Rayleigh waves

Li, L, Nimbalkar, S and Zhong, R 2018, 'Finite element model of ballasted railway with infinite boundaries considering effects of moving train loads and Rayleigh waves', Soil Dynamics and Earthquake Engineering, vol. 114, pp. 147-153.


Document type: Journal Article
Collection: Journal Articles

Title Finite element model of ballasted railway with infinite boundaries considering effects of moving train loads and Rayleigh waves
Author(s) Li, L
Nimbalkar, S
Zhong, R
Year 2018
Journal name Soil Dynamics and Earthquake Engineering
Volume number 114
Start page 147
End page 153
Total pages 7
Publisher Pergamom Press
Abstract This paper proposes a three-dimensional model incorporating finite element (FE) meshes with infinite element (IE) boundaries for ballasted railways. Moving train loads are simulated with sliding motions of moving elements which have hard contact feature at the interface with supporting rails. Dynamic responses of ballasted railway under different train speeds are investigated in time domain and frequency domain to identify the predominant frequency and critical speed. Rayleigh wave (R-Wave) propagation is simulated using the combined FE-IE model to determine the velocity of R-Wave in the layered embankment model and its relationship with the critical speed of the ballasted railway. The proposed model is successfully validated against the results of Euler-Bernoulli Elastic Beam (E-BEB) model.
Subject Structural Engineering
Keyword(s) Ballasted railway
Critical speed
Finite element model
Infinite element
Moving train load
Rayleigh wave
DOI - identifier 10.1016/j.soildyn.2018.06.033
Copyright notice © 2018 Elsevier Ltd. All rights reserved.
ISSN 0267-7261
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