Railway Dynamic Simulation: Recent Advances and Perspective, 2nd Edition

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Transportation and Future Mobility".

Deadline for manuscript submissions: 30 April 2024 | Viewed by 454

Special Issue Editor

Faculty of Transport, Warsaw University of Technology, ul. Koszykowa 75, 00-662 Warsaw, Poland
Interests: railways
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Special Issue Information

Dear Colleagues,

The railway as a whole, i.e., the transportation system, as well as its elements, e.g., rail vehicles or infrastructure, are physically large objects. Studying their properties based on their direct observations, conducting experiments on them, measuring the chosen quantities during tests, and their exploitation are thus difficult. As soon as the simulation techniques became advanced enough, the space appeared for them to replace such direct observations, experiments and measurements. Nowadays, after decades of using them, it is obvious that they save time and money vastly and make it possible to obtain data about the system and its elements that could not be obtained for practical reasons without their aid. What is more, the volume of data obtained from a single simulation experiment is usually much greater than that obtained from the measurements during some, even extensive, experiments on the real object. All this is recently possible due to the continuous development of computer techniques, both in the hardware and software parts. The number of dynamical issues that can and are treated with numerical simulation techniques is enormous. That is why the scope of numerical simulation is limited to the dynamical, engineering and scientific issues related to mechanical, civil and railway transport engineering. In particular, this might refer to dynamical issues in rail vehicles, railway infrastructure and railway transport organization and planning. On the other hand, any issues related in the broader sense to those aforementioned are of interest. The scope includes modelling methods for the needs of simulation, simulation software, and the results of the simulations both of theoretical and practical character. The combination of dynamical simulation with other methods of analysis, as well the corresponding results, are of interest also. The word “advances” in the subtitle is understood in the broadest sense. Therefore, it refers equally to new results in terms of methods, studied objects, cognitive and practical aspects, and so on.

This Special Issue welcomes original manuscripts concerning, but not limited to, the application of numerical simulation in studies of phenomena, properties, and processes of a dynamical nature with regard to the following issues:

  • Railway vehicle dynamics in general,
  • Railway vehicle stability,
  • Curving performance,
  • Vehicle–infrastructure interactions,
  • Fatigue strength and wear of vehicle and its elements,
  • Comfort problems,
  • Track loading,
  • Track durability,
  • Track maintenance,
  • Less conventional track–vehicle systems,
  • Organization of rail transport,
  • Railway as a transportation system,
  • Rail transport as subsystem within city, area, country, and world transportation systems.

Prof. Dr. Krzysztof Zboiński
Guest Editor

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  • numerical simulation
  • dynamical issues
  • railway vehicle dynamics
  • vehicle track interactions
  • track infrastructure
  • track layout
  • railway transportation system

Published Papers (1 paper)

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14 pages, 5598 KiB  
Mitigation of Railway-Induced Ground Vibration by Soft Support Elements and a Higher Bending Stiffness of the Track
Appl. Sci. 2024, 14(3), 1244; https://doi.org/10.3390/app14031244 - 02 Feb 2024
Viewed by 314
The mitigation of train-induced ground vibrations by track solutions is investigated by calculations and measurements. The calculation by a wavenumber domain method includes the correct vehicle–track interaction and the correct track–soil interaction. Some theoretical results for elastic elements and an increased bending stiffness [...] Read more.
The mitigation of train-induced ground vibrations by track solutions is investigated by calculations and measurements. The calculation by a wavenumber domain method includes the correct vehicle–track interaction and the correct track–soil interaction. Some theoretical results for elastic elements and an increased bending stiffness of the track are presented where the force transfer of the track and the vehicle–track interaction are calculated for the high-frequency dynamic mitigation, and the force distribution along the track is calculated for the low-frequency mitigation which is due to the smoother impulses from the passing static loads. Measurement results for the ground vibration near isolated and un-isolated tracks are given for several under-sleeper pads, for under-ballast mats, and for several under-ballast plates and ballast troughs. The elastic elements yield a resonance frequency of the vehicle–track–soil system and a high-frequency reduction of the dynamic axle loads which depends mainly on the softness of the pads or mats and which can be improved by a higher sleeper mass. In addition, all troughs and most of the soft elements show a low-frequency reduction which is attributed to the scattered impulses of the static axle loads. Besides this main contribution of the article, the problem of a soft reference section on a different soil is discussed and recommendations for better ground vibration measurements of mitigation effects are given. Full article
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