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    Wyświetlanie 1-4 z 4
    Tytuł:
    Sperling’s comfort index study in a passenger car with independently rotating wheels
    Autorzy:
    Vaičiūnas, Gediminas
    Steišūnas, Stasys
    Powiązania:
    https://bibliotekanauki.pl/articles/2098099.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    passenger car
    dynamic characteristics
    comfort
    Sperling's comfort index
    samochód osobowy
    właściwości dynamiczne
    komfort
    wskaźnik komfortu Sperlinga
    Opis:
    In this article, we compare the dynamic characteristics of cars with integral wheelsets and wheelsets with independently rotating wheels. We use Sperling’s comfort index to assess the riding comfort. We compare the riding comfort of passenger cars with integral wheelsets and wheelsets with independently rotating wheels based on Sperling’s comfort index.
    Źródło:
    Transport Problems; 2021, 16, 2; 121--130
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Adaptation of rail passenger car suspension parameters to independently rotating wheels
    Autorzy:
    Vaičiūnas, Gediminas
    Steišūnas, Stasys
    Bureika, Gintautas
    Powiązania:
    https://bibliotekanauki.pl/articles/2098090.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    railway
    Nadal criterion
    Sperling's comfort index
    running gear
    independently rotating wheels
    kolej
    Kryterium Nadala
    wskaźnik komfortu Sperlinga
    podwozie
    niezależnie obracające się koła
    Opis:
    This study aimed to adjust the rail passenger car running gear parameters by adapting them to independently rotating wheels. The most important aspect was the safety of the passenger car running in terms of derailment; thus, the values of the Nadal criterion were calculated first. Another aspect to consider is passenger comfort based on the values of Sperling’s comfort index according to the rail passenger car speed. The modes of suspension behaviour during operation were considered in two typical conditions: on a straight track section and on a curve with a 200-m radius. Calculations were performed using Universal Mechanism software. The results are interpreted in the paper, and the final conclusions of this study are given.
    Źródło:
    Transport Problems; 2021, 16, 1; 215--226
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on the predictability of the vertical impact of rail vehicles running gear on rails considering weather conditions and wagon suspension load
    Autorzy:
    Steišūnas, Stasys
    Vaičiūnas, Gediminas
    Bureika, Gintautas
    Sánchez, Celestino
    Powiązania:
    https://bibliotekanauki.pl/articles/2203877.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    running gear
    wheel-rail interaction
    measuring systems
    correlation of measured value
    podwozie
    interakcja koło-szyna
    systemy pomiarowe
    korelacja wartości mierzonej
    Opis:
    The faulty running gear of rail vehicles can be identified by the results of measurements of vertical forces caused by wheel running surface damages or other wrongness of bogie suspension. Several different automatic diagnostic systems are used in European railways (operating while the trains are in service) to detect damage to rail-wheel running surfaces. The principles of this trackside equipment operation and the reliability of their measurements may differ noticeably. This is especially true in different seasons of the year (winter/summer). Data collection and aggregation results should be checked in equivalency (comparability). The authors compared the efficiency of different automatic systems in detecting wheel failures according to wheel-rail loads in different seasons of the year and presented their results. The authors also compared the similarity of results of the different measurement systems.
    Źródło:
    Transport Problems; 2022, 17, 4; 67--78
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of track geometry condition monitoring on railway infrastructure maintenance processing
    Autorzy:
    Bureika, Gintautas
    Vaičiūnas, Gediminas
    Shi, Dachuan
    Zanuy, Armando Carrillo
    Powiązania:
    https://bibliotekanauki.pl/articles/2203878.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    rail transport
    railway infrastructure
    track geometry
    monitoring
    IFLAM
    transport kolejowy
    infrastruktura kolejowa
    geometria toru
    Opis:
    This study analyzed the usage of data of track geometry measurement for railway infrastructure maintenance processing support and estimated its influence on railway infrastructure maintenance decision-making. Especially, the approach assessment of the influence of track geometry monitoring on railway infrastructure processing. The well-timed maintenance of the arrangement of railway tracks in allowable conditions is sufficient for the smooth and steady running of rail vehicles. The mechanism of track gauge widening during exploitation is usually gradual and relatively long-lasting. When are not detected in a timely manner, the final track failures often arise under the effect of additional factors, such as surpassed train speed limit, poorly maintained and functioning running gear of a rail vehicle, misalignment of rails, and extreme dynamical effects. A questionnaire considering the influence of the application of track geometry monitoring was formulated. An expert review was completed in order to perform a comparative analysis of the features of track geometry monitoring with the greatest influence on railway infrastructure maintenance processing. The data collected from respondents were processed using a multi-criterion estimation method, especially an interactive fuzzy linear assignment method. Finally, basic conclusions and considerations are given.
    Źródło:
    Transport Problems; 2022, 17, 4; 211--220
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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