Кафедра "Вагони та вагонне господарство" ДІІТ

Permanent URI for this communityhttp://crust.ust.edu.ua/handle/123456789/658

UKR: У ЦЮ СПІЛЬНОТУ ДАНІ НЕ ДОДАЮТЬСЯ
У 2026 р. ця кафедра увійшла до складу кафедри "Управління та експлуатація рухомого складу"

ENG: Department of Wagons and Rolling Stock
In 2026, this department became part of the Department of Rolling Stock Management and Operation

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Now showing 1 - 3 of 3

High Speed Stability of a Railway Vehicle Equipped with Independently Rotating Wheels
(Ústav Teoretické a Aplikované Mechaniky, Prosecká, Czech Republic, 2018) Kyryl’chuk, Oleg A.; Kalivoda, Jan; Neduzha, Larysa O.
EN: The paper is devoted to the study of lateral oscillation and the assessment of the motion stability of a four axle railway vehicle equipped with wheelsets with independently rotating wheels. First, a linear four degrees of freedom mathematical model of the unconstrained wheelset in a straight track has been built. The wheelset model was consequently utilized in a model of the whole vehicle representing typical railway passenger car. The model has 25 degrees of freedom and it is described by a system of 50 first order homogeneous differential equations. Linear algebra methods were used to assess the stability. The influence of a running velocity, the torsional stiffness of wheelsets and the viscosity of coupling element between wheels was studied. Results of this study shows that wheelsets with independently rotating wheels and viscous coupling element enable stable behaviour of a vehicle at speeds exceeding 500 km/h. Prospectively, this type of wheelset is applicable to high-speed railway vehicles, because it offers either further increase of running speeds or simplification of running gear while preserving high speed stability.
High Speed Stability of a Railway Vehicle Equipped with Independently Rotating Wheels (preprint)
(Ústav Teoretické a Aplikované Mechaniky, Prosecká, Czech Republic, 2018) Kyryl’chuk, Oleg A.; Kalivoda, Jan; Neduzha, Larysa O.
EN: The paper is devoted to the study of lateral oscillation and the assessment of the motion stability of a four axle railway vehicle equipped with wheelsets with independently rotating wheels. First, a linear four degrees of freedom mathematical model of the unconstrained wheelset in a straight track has been built. The wheelset model was consequently utilized in a model of the whole vehicle representing typical railway passenger car. The model has 25 degrees of freedom and it is described by a system of 50 first order homogeneous differential equations. Linear algebra methods were used to assess the stability. The influence of a running velocity, the torsional stiffness of wheelsets and the viscosity of coupling element between wheels was studied. Results of this study shows that wheelsets with independently rotating wheels and viscous coupling element enable stable behaviour of a vehicle at speeds exceeding 500 km/h. Prospectively, this type of wheelset is applicable to high-speed railway vehicles, because it offers either further increase of running speeds or simplification of running gear while preserving high speed stability.
Testing of Railway Vehicles Using Roller Rigs
(Vilnius Gediminas Technical University, Vilnius, Lithuania, 2017) Myamlin, Sergey V.; Kalivoda, Jan; Neduzha, Larysa O.
EN: Roller rigs are laboratory devices enabling to study various phenomena in the field of railway vehicles dynamics and the wheelrail contact. The main benefits of roller rig experiments are high controllability, repeatability and flexibility of experiment setup and usually also lower costs compared to the field tests. One of the goals of joint cooperation between the Czech Technical University in Prague, Czech Republic (CTU) and the Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan, Ukraine (DNURT) is to design, build, and finally to operate at the DNURT laboratory the new roller rig. The presented paper is an initial study prepared within the framework the joint project. It summarizes the possibilities of roller rig utilization for railway vehicles research and describes the main concepts of existing design solutions.