Browsing by Author "Husak, Marina"

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    The Advisability of Using Dual Gauge for Expansion of the International Traffic
    (Printing House “Technologija”, Kaunas, Lithuania, 2020) Kurhan, Mykola ; Kurhan, Dmytro ; Husak, Marina ; Hmelevska, Nelya
    ENG: The possibilities of railway transport for the organization of transportation between the countries are not used to the full extent, since there are a number of technical reasons. The usage of dual gauge (1435/1520 mm) is one of the solutions. As an example of using dual gauge is the international project "Rail Baltica", Lviv railway and etc.
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    Determination of the Type and the Length for the Transition Curves on the Directions of High-Speed Train Operation
    (Széchenyi István University, Győr, Hungary, 2022) Kurhan, Mykola ; Kurhan, Dmytro ; Husak, Marina ; Hmelevska, Nelya
    ENG: In many countries around the world, a cubic parabola is used as transition curves in a simplified form. Today, the properties of many mathematical curves are well studied, which can be used as transition curves. The object of research is the process of restructuring transition curves when organizing high-speed trains operation. The use of modern means of mathematical modelling allows to add a number of dynamic characteristics for evaluation parameters of motion in the curved sections of the tracks. Thus, with an increase in speed for transition curves, both the values of unbalanced acceleration and its change in time, and also the velocity attenuation of oscillations of rolling stock when moving from a transition curve to a circular curve or to a direct section. On the basis of the conducted research, it has been found that when increasing the speed of the vehicle movement in the range from 120 to 200 km/h, the length of the stabilization section increases at the output of the curvature by an average of 20 m for every 40 km/h. The analysis showed that with correctly set parameters of transition curves, which correspond to the maximum speed of movement and radius of a circular curve, the strength and reliability of the bearing elements in the structure of the permanent way and the travel comfort are fully ensured.
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    Impact of The Variable Stiffness Section on The Conditions of Track and Rolling Stock Interaction
    (IOP Publishing Ltd., 2020) Kurhan, Dmytro ; Kurhan, Mykola ; Husak, Marina
    ENG: Railway track stiffness is one of the main parameters that determine the track and rolling stock interaction. The inelasticity of the rail base may occur for two reasons: either as a consequence of the deteriorated condition of a track or due to the structural features of a section. As a rule, areas before bridges or tunnels are treated. Today, there are several options for relevant design solutions. The main purpose of this work is to determine the characteristics of a "railway track" object with which it can be represented in the rolling stock models in the simplest way possible but adequate for sections of transient stiffness. The railway track is introduced into the rolling stock model as a sequence of elements with which the wheels of the rolling stock interact. It is assumed that a single element in its characteristics must be equivalent to the track response when passing the wheel from one inter-sleeper section to the next one, that is, to reproduce a sequence that is cyclically repeated. Such a track element will be characterized by reduced mass, stiffness and dissipation factor.
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    Increasing the Efficiency of the Railway Operation in the Specialization of Directions for Freight and Passenger Transportation
    (Obuda University, Hungary, 2022) Kurhan, Mykola ; Kurhan, Dmytro ; Husak, Marina ; Hmelevska, Nelya
    ENG: It is shown that in the mixed traffic of trains compared to the directions specialized for transportation of freight and passengers, the traffic capacity is sharply reduced, and costs on repairs and maintenance of track infrastructure increase by 1.5-2 times. The paper outlines ways to solve the problem in the distribution of directions with mainly freight and passenger traffic to increase the traffic capacity of transportation on the rail network. Among the activities, there is the transmission of transit freight flow on parallel runs. Furthermore, changing the operation conditions of railways in the case of implementing the high-speed trains traffic requires strengthening the existing railway lines in the event of insufficient reserves.
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    Innovative Technologies for the Introduction of High-Speed Train Operation (on the Example of Track Maintenance in the Plan)
    (Technologija, Kaunas, Lithuania, 2022) Kurhan, Mykola ; Kurhan, Dmytro ; Husak, Marina ; Hmelevska, Nelya
    ENG: The purpose of the work is to research the process of introducing innovative technologies in the organization of highspeed train operations. The new knowledge is based on such scientific approaches as a comprehensive and detailed study of various aspects of innovative activities, which has provided an opportunity to increase the interoperability of the European transport system and recommend measures to organize high-speed train operations. The research used analysis methods to study the main directions in the introduction of innovative technologies and technical solutions in the field of, firstly, track infrastructure, scientific publications on the current state and trends in the European system of international railway transport, including innovative ways of development.
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    Perspectives of High-Speed Train Traffic in Ukraine at the Stage of Integration with the European Network
    (Kaunas University of Technology, Kaunas, Lithuania, 2021) Kurhan, Mykola ; Kurhan, Dmytro ; Husak, Marina ; Hmelevska, Nelya
    ENG: The extension concept of the high-speed network for Eastern European countries has been formulated the implementation of which will allow integrating the railways of Ukraine into a high-speed network of Europe. Based on the analysis of long-term tasks, the following issues are subject to the rationale: the implementation of speed (161-200 km/h) and high- speed (250-350 km/h) train traffic in Ukraine, transition to a new track, which in its parameters will ensure the implementation of high-speed train traffic, the use of rolling stock with the tilting of car bodies, constructing the uropean standard gauge. Based on the results of scientific developments, the authors outlined the ways to solve the problem concerning the designing route of the high-speed network and the creation of a