Abstract
By analysing the dynamic interaction between the railway vehicle and the track we are able to explain complex interactive phenomena that are particularly important in the case of higher and high speed of a moving rail vehicle on railway track.The paper focuses on the solution of the above mentioned problem with the help of numerical computer simulations. The important step on the way to create a respective simulation model is setting objective entry parameters of railway track as well as taking its imperfections into consideration. These imperfections significantly influence the results of dynamic interaction. Out of the considered track imperfections, we particularly solve deformation resistance inhomogeneity of track grid subgrade and vertical irregularities of rail belt.
Highlights
The railway infrastructure presents a strategical component of Slovak transport infrastructure from the point of view of securing continuous national and transit transport within the European Union.The most important transit rail tracks crossing the Slovak Republic are defined according to international conventions AGC (1985) and AGTC (1993)
The experimental measurements of dynamic interaction vehicle/ track realized in situ present the only way of verification of numeric results and the only way of revealing objective reality
At the same time it is necessary to emphasize that carrying out of such experimental measurements in the rail track under operation is often limited by the possibility of sensor installation in one measured place only
Summary
The railway infrastructure presents a strategical component of Slovak transport infrastructure from the point of view of securing continuous national and transit transport within the European Union.The most important transit rail tracks crossing the Slovak Republic are defined according to international conventions AGC (1985) and AGTC (1993). In the case of high and higher speed, the dynamic interaction force effects are significantly noticeable They influence the durability and reliability of rail construction in a crucial way and they ought to be expressly considered in the process of construction design and dimensioning. There is reference to the present deficiencies in the process of design of rail track construction and there are implied solution possibilities in the form of new approaches to rail track construction dimensioning They are a result of theoretical simulation analyses that we suppose to verify by experimental measurements in near future in the new laboratory of Faculty of Civil Engineering in Veľký Diel campus. In this laboratory there will be located a dynamic pulsator for cyclical loading tests
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