Journal ArticleDOI
Modelling of Railway Track and Vehicle/Track Interaction at High Frequencies
Klaus Knothe,S L Grassie +1 more
TLDR
A review of dynamic modelling of railway track and of the interaction of vehicle and track at frequencies which are sufficiently high for the track's dynamic behaviour to be significant is presented in this paper.Abstract:
A review is presented of dynamic modelling of railway track and of the interaction of vehicle and track at frequencies which are sufficiently high for the track's dynamic behaviour to be significant. Since noise is one of the most important consequences of wheel/rail interaction at high frequencies, the maximum frequency of interest is about 5kHz: the limit of human hearing. The topic is reviewed both historically and in particular with reference to the application of modelling to the solution of practical problems. Good models of the rail, the sleeper and the wheelset are now available for the whole frequency range of interest. However, it is at present impossible to predict either the dynamic behaviour of the railpad and ballast or their long term behaviour. This is regarded as the most promising area for future research.read more
Citations
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Journal ArticleDOI
Fundamentals of vehicle–track coupled dynamics
TL;DR: In this article, a three-dimensional vehicle-track coupled dynamics model is developed in which a typical railway passenger vehicle is modelled as a 35-degree-of-freedom multi-body system.
Journal ArticleDOI
A review of loading conditions for railway track structures due to train and track vertical interaction
TL;DR: In this paper, a review of the typical characteristics of the loading conditions for railway track structures, in particular, impact loads due to the wheel/rail interaction, is presented, with particular emphasis on the typical shapes of the impact load waveforms generally found on railway tracks.
Journal ArticleDOI
Modelling and experiment of railway ballast vibrations
TL;DR: In this article, a five-parameter model for analysis of railway ballast vibration is established based upon the hypothesis that the load-transmission from a sleeper to the ballast approximately coincides with the cone distribution.
Journal ArticleDOI
Ground-borne vibration due to static and dynamic axle loads of InterCity and high-speed trains
Geert Lombaert,Geert Degrande +1 more
TL;DR: In this paper, a solution strategy is presented that allows for the evaluation of the second-order statistics of the response due to dynamic excitation based on the power spectral density function of the track unevenness.
Journal ArticleDOI
The experimental validation of a numerical model for the prediction of railway induced vibrations
TL;DR: In this paper, the authors presented the experimental validation of a numerical model for the prediction of train induced vibrations, where the track geometry is assumed to be invariant with respect to the longitudinal direction, allowing for an efficient solution of the dynamic track-soil interaction problem in the frequency-wavenumber domain.
References
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Book
Vibration of solids and structures under moving loads
L. Frýba,C. R. Steele +1 more
TL;DR: In this paper, one-dimensional solids, two-dimensional and three-dimensional (3D) solids have been studied in the context of special problems, where the problem is to solve a special problem.
Journal ArticleDOI
A Comparison of Alternative Creep Force Models for Rail Vehicle Dynamic Analysis
Z. Y. Shen,J. K. Hedrick +1 more
TL;DR: In this paper, a comparison of alternative Creep Force Models for rail vehicle dynamic analysis is presented, and the results show that the alternative models are less accurate than the original models in terms of acceleration and acceleration.
Journal ArticleDOI
Free wave propagation in periodically supported, infinite beams
TL;DR: In this paper, the authors considered the free harmonic motion of infinite beams on identical, equi-spaced supports and derived the flexural propagation constants for beams on rigid supports which exert elastic rotational restraint.
Journal ArticleDOI
The Dynamic Response of Railway Track to High Frequency Vertical Excitation
TL;DR: In this article, two new dynamic models of railway track are presented, one continuous and the other incorporating the discrete mass of the sleepers, including the effect of the railpads which exist.