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    Wyświetlanie 1-3 z 3
    Tytuł:
    Numerical analysis of impact between shunting locomotive and selected road vehicle
    Autorzy:
    Dziewulski, P.
    Stankiewicz, M.
    Szurgott, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/245955.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    finite element method
    dynamic analysis
    crash test
    railway vehicle
    LS-DYNA
    Opis:
    The main aim of this study is to carry out dynamic finite element analysis of a crash between shunting locomotive and selected road vehicle. Numerical simulations include side impact of the running locomotive in the vehicle situated across the track. A considered locomotive based on a popular Polish shunting locomotive – SM42. However, the tested locomotive was slightly modernized in comparison with the original one. Finite element model of the locomotive was developed by the authors whereas the vehicle FE model was download from the free database of such models. FE analysis was carried out according to the PN-EN 15227 standard which provides crashworthiness requirements for railway vehicle bodies. 15 tons large truck was selected as a representative for the study. One of the design collision scenario includes such deformable obstacle for railway vehicles operated on national and regional networks. LS-DYNA computer code was used for the simulations. The paper presents selected results of analysis generally focused on the locomotive frame behaviour. Contours of stress for selected moments of time are presented. Moreover, time histories of selected parameters are depicted. The energy balance was also checked in order to confirm the accuracy of analysis. The current study is a part of the project focused on modernization of the SM42 locomotive. Therefore, it is required to evaluate the locomotive behaviour during the impact test. Dynamic numerical simulation are acceptable since the experimental tests on the complete objects under consideration are impractical and impossible at the moment.
    Źródło:
    Journal of KONES; 2014, 21, 4; 87-94
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental and numerical studies of selected types of batteries - state-of-the-art
    Autorzy:
    Konarzewski, M.
    Stankiewicz, M.
    Szurgott, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/244664.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    battery
    cell
    experimental studies
    numerical studies
    Opis:
    The purpose of this article is to provide-on the basis of the literature review—the current state of knowledge concerning the experimental and numerical studies of selected types of batteries. The authors focused their actions on batteries that could to be the base for an energy storage system possible to apply in hybrid shunting locomotive. Following standards, e.g. IEEE 1625, IEEE 1725, UL 1973 and UL 2271 were taken into consideration within the context of the experimental research. Numerical analysis based mostly on the original solutions proposed by research teams. In recent times, the significant growth of interest in hybrid vehicles can be observed. Therefore, appropriate design of the energy storage system for each case is necessary. Moreover, the battery working process in hybrid vehicles is very specific, hence determination of their working conditions depending on the vehicle application is required. Very often, the experimental studies related with the batteries are based on the parameters recorded during the test conducted during the regular operation of the vehicle. Furthermore, research teams also carry out numerical analysis based on e.g. the finite element method (FEM). Such analyses can be focused on the thermal analyses of single cell or cells, analyses of the electrochemical effects as well as a coupled electro-thermal analyses.
    Źródło:
    Journal of KONES; 2014, 21, 3; 157-163
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hybrid locomotives overview of construction solutions
    Autorzy:
    Konarzewski, M.
    Niezgoda, T.
    Stankiewicz, M.
    Szurgott, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/245761.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    hybrid powertrain
    hybrid locomotive
    diesel-electric locomotive
    railway vehicles
    Opis:
    Nowadays, transportation becomes a significant source, apart from factories and power plants, of air pollution. Therefore, due to legal restrictions on the emission of noxious gases, other power sources for vehicles are necessary. Some of these power sources allow replacement of the internal combustion engine completely, whereas the other ones only support the engine operation. Hence, a hybrid powertrain – alternative to the drivetrain equipped with an internal combustion engine only – is increasingly being used. The hybrid powertrain was mostly applied in cars and buses but recently it has been also used in railway vehicles such as locomotives and multiple units. The paper presents a shortened and brief overview of construction solutions of selected hybrid locomotives. A list of the applied hybrid drive systems as well as the basic data and properties are provided. The most important variants of vehicles are compared. The presented material allows identification of the development trends in the considered area. The hybrid locomotive usually uses an onboard rechargeable energy storage system, placed between the power source and the traction transmission system connected to the wheelsets. Modification of a classic diesel-electric locomotives is a relatively simple procedure since they have all the components of a series hybrid transmission except the storage battery. Therefore, the existing and operated diesel-electric locomotives can be modified to increase their efficiency and reduce operating costs and emissions.
    Źródło:
    Journal of KONES; 2013, 20, 1; 127-134
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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