Спеціалізоване конструкторсько-технологічне бюро "Мікропроцесорні системи управління та безпека на залізничному транспорті"

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http://crust.ust.edu.ua/handle/123456789/3727
ENG: Specialized design and technology bureau "Microprocessor control systems and safety in railway transport"

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Browsing Спеціалізоване конструкторсько-технологічне бюро "Мікропроцесорні системи управління та безпека на залізничному транспорті" by Subject "computer modelling"

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    To the Problem of Train Running Safety
    (IOP Publishing Ltd., 2020) Pshinko, Oleksandr M.; Ursulyak, Liudmyla V.; Zhelieznov, Konstiantyn I.; Shvets, Anzhela O.
    EN: The paper is presenting the procedure used for establishing the cause of the wagon derailment. To do this, the computer simulations and the computational software, developed in the Dnipro National University of Railway Transport (DIIT) were used. The level of longitudinal forces and the wagons dynamic performance have been evaluated using the mathematical models of longitudinal oscillations of a train and the spatial vibrations of wagons, in particular of tank wagons. As a result of modeling we obtained oscillograms of longitudinal forces in each inter-wagon connection, the dependence of the largest longitudinal forces on travel time and distance traveled, the distribution of the maximum longitudinal forces along the train length, the speed dependence on travel time and track coordinates. We also obtained the dynamic performance of wagons: the vertical dynamics coefficients of the axlebox and central suspension, the horizontal dynamics coefficients and the derailment stability coefficient. The influence of the movable load in the tank wagons and the characteristics of rail irregularities on the stability coefficient against wheel climbing onto the rail is also considered. The presented methodology was used to determine the cause of the tank wagon derailment in a non-homogenous freight train consisting of 50 wagon tanks on an existing track section of the Lithuanian railways. When simulating the train movement, it was assumed that the train was equipped with elastic-friction absorbing devices and air distributors, turned on to the average operation mode. As a result of numerical experiments, an assumption was made about the cause of the train derailment.
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    Определение инерционных характеристик подвижного состава при моделировании динамической нагруженности
    (Донецкий институт железнодорожного транспорта, Донецк, 2011) Мямлин, Сергей Витальевич; Недужая, Лариса Александровна; Тен, Александр Алексеевич; Швец, Анжела Александровна
    RU: Данная статья посвящена особенностям исследований инерционных характеристик подвижного состава с детальным анализом методов их определения для последующего использования этих данных при моделировании динамической нагруженности. Математическое моделирование пространственных колебаний грузового вагона осуществлялось с использованием программного комплекса «Dynamics of Rail Vehicles» («DYNRAIL»).