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Wyszukujesz frazę "train simulation" wg kryterium: Temat

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Estimation of dynamic performances of the safe operation of high-speed electric train
    Autorzy:
    Domin, R.
    Domin, I.
    Cherniak, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/223834.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    high-speed electric train
    electric train
    safe operation
    computer simulation
    dynamic performances
    anti-yaw dampers
    szybki pociąg elektryczny
    pociąg elektryczny
    bezpieczeństwo
    symulacja komputerowa
    osiągi dynamiczne
    Opis:
    The process of implementation of new developments, in particular, new generation rolling stock holds a prominent place among the range of measures for organization of high-speed passenger rail transportation in Ukraine. The example of permission for use and the initial phase of work with interregional NRCS2 dual-mode electric trains produced by Hyundai-Rotem Corporation is the illustrative one in this context. Due to the detection of macro-cracks in bolster beams of the car body frames of these electric trains, namely in the areas of mounting of anti-yaw dampers, these trains were taken out of service until the completion of the modernization of problematic nodes. The comprehensive study on the determination of the safety parameters of electric trains was conducted to determine the causes of destruction of bolster beams. At the same time, bolster beams loading was estimated depending on the characteristics of anti-yaw dampers by means of computer simulation of the dynamics of motion of trailing and motor cars. The feasibility of selection of parameters for anti-yaw dampers mounted on electric train cars was assessed. The results of work will improve the safe operation of high-speed trains and increase the efficiency of estimates regarding the loading of bearing structures of underframes of the of rolling stock.
    Źródło:
    Archives of Transport; 2017, 41, 1; 7-16
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design of large-scale streamlined head cars of high-speed trains and aerodynamic drag calculation
    Autorzy:
    Wu, Z.
    Yang, E.
    Ding, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/224065.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    high speed train
    NURBS
    aerodynamic drag
    streamlined head car
    numerical simulation
    pociąg ekspresowy
    opór aerodynamiczny
    symulacja numeryczna
    Opis:
    Aerodynamic drag plays an important role in high-speed trains, and how to reduce the aerodynamic drag is one of the most important research subjects related to modern railway systems. This paper investigates a design method for large-scale streamlined head cars of high-speed trains by adopting NURBS theory according to the outer surface characteristics of trains. This method first created the main control lines of the driver cab by inputting control point coordinates; then, auxiliary control lines were added to the main ones. Finally, the reticular region formed by the main control lines and auxiliary ones were filled. The head car was assembled with the driver cab and sightseeing car in a virtual environment. The numerical simulation of train flow field was completed through definition of geometric models, boundary conditions, and space discretization. The calculation results show that the aerodynamic drag of the high-speed train with large-scale streamlined head car decreases by approximately 49.3% within the 50-300 km/h speed range compared with that of the quasi-streamlined high-speed train. This study reveals that the high-speed train with large-scale streamlined head car could achieve the purpose of reducing running aerodynamic drag and saving energy, and aims to provide technical support for the subsequent process design and production control of high-speed train head cars.
    Źródło:
    Archives of Transport; 2017, 44, 4; 89-97
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulation analysis of the impact of container wagon pin configuration on the train loading time in the intermodal terminal
    Autorzy:
    Nehring, Karol
    Kłodawski, Michał
    Jachimowski, Roland
    Klimek, Piotr
    Vašek, Rostislav
    Powiązania:
    https://bibliotekanauki.pl/articles/2067402.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    container train
    loading
    intermodal terminal
    wagon pin configuration
    simulation analysis
    FlexSim
    pociąg kontenerowy
    załadunek
    terminal intermodalny
    konfiguracja sworznia wagonu
    analiza symulacyjna
    Opis:
    The article presents the issues of a container train loading at the land intermodal terminal. This issue was considered from the point of view of the distance covered by the loading devices and the duration of loading works, which was influenced by the arrangement of containers on the storage yard and the configuration of pins on the wagons. The conducted research was dictated by the small number of publications on loading an intermodal train, especially from the point of view of pin configuration on wagons. The vast majority of the literature is devoted in this field to marine intermodal terminals, which operating characteristics are different from inland terminals. The importance of this problem resulting from the growing turnover of containers transported by rail transport was also pointed out. The systematic increase of this type of transport and the depletion of the intermodal services' operating capability makes it necessary to improve the train loading process. For the purposes of the research, the issues of containers of various sizes loading onto wagons planning with various pin configurations were presented. A literature review was carried out in the field of train loading methods and strategies. A mathematical model was developed for the decision situation under consideration. The equations defining the most important elements of the considered problem were presented in the general form. This model was implemented in the FlexSim simulation environment. The constructed simulation model was used to develop 12 variants of the approach to an intermodal train loading. The train loading tests were performed both for the random arrangement of containers on the storage yard and for the random arrangement of pins on the wagons. The obtained results made it possible to determine how the knowledge of the arrangement of pins on the wagons influences the planning of train loading and increases the efficiency of loading devices.
    Źródło:
    Archives of Transport; 2021, 60, 4; 155--169
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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