We investigate the dynamics of weakly-modulated nonlinear wave trains. For reaction-diffusion systems and for the complex Ginzburg–Landau equation, we establish rigorously that slowly varying modulations of wave trains are well approximated by solutions to the Burgers equation over the natural time scale. In addition to the validity of the Burgers equation, we show that the viscous shock profil...

High-speed trains with the maximum speed of 300 km/h, named as Korea Train Express (KTX), have started revenue services since April 2004. Because of the geomorphologic conditions of Korea a large portion of the ‘Kyung-Bu’ line is comprised of tunnels or bridges, which may cause excessive noise in a vehicle. The vibration generated by the trains propagates into the tunnel and the vehicle structu...

Investigation of vertical vibrations of a railway turnout is important in designing track components under moving loads of trains. In this paper, the turnout is simulated by a linear finite element model with modal damping. A section of the turnout has a length of 36 sleeper spans surrounding the crossing. Rails and sleepers are modeled with uniform Rayleigh-&#10Timoshenko beam elements. The ra...

A pricing methodology adapted to specific railroad infrastructures and the trains that use them is one way to ensure that railroad networks used by several different operators are used optimally. The diversity of railway networks (new lines and old lines) and services (long-distance and suburban passenger trains, freight trains, etc.) make it difficult to develop such a pricing methodology. Thi...

A large number of passengers in Austria commute on a daily basis by using High Speed Trains (HSTs). Nowadays, a large amount of passengers can be considered active mobile phone users. Due to increased numbers of mobile users, the capacity problem is considerably introduced. To deal with this issue, the railway company in Austria (ÖBB) has implemented Wi-Fi on-board the railjet high speed trains...

Train-to-train communication will be the key technology for future railway operation. An increase of safety and efficiency can be achieved by exchanging data between trains via ad hoc networks. For vehicle-to-vehicle communication the European standard is intelligent transport systems (ITS-G5). The usage of this standard for railways is hardly investigated. We investigate the performance of ITS...

We consider a network of periodically running railway lines. Investments are possible to increase the speed and to improve the synchronisation of trains. The model also includes random delays of trains and the propagation of delays across the network. We derive a cost-benefit analysis of investments, where the benefit is measured in reduced waiting time for passengers changing lines. We also es...

High-speed health trains have the advantages of large rescue volume, strong continuous operation capability, and medical treatment on way. It is best transport platform for large-scale transfer tasks. To solve problem space limitations vehicle formation high-speed trains, a new method layout design evaluation based improved systematic planning (SLP) was proposed. First, SLP improved, relationsh...

The accuracy in determined energy consumption and running time of trains, by means of computer simulation, is dependent upon the various models used. This thesis aims at developing validated models of running resistance, train and of a general driver, all based on full scale testing. A partly new simple methodology for determining running resistance, called by energy coasting method is develope...

On the basis of theoretical prerequisites and experimental studies, to substantiate choice factors that determine formation a dynamic load on track from modern rolling stock for high-speed traffic. As result, method determining vertical design force acting wheel rail is given. Methodology. Fundamental structural changes in trains, significant increase speed movement lead need revise methods cal...