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    Wyświetlanie 1-11 z 11
    Tytuł:
    Loading and damageability of wheels and rails
    Obciążenia i uszkodzenia kół i szyn
    Autorzy:
    Tumanishvili, G.
    Chelidze, M.
    Zviadauri, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/375140.pdf
    Data publikacji:
    2009
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    obciążenie
    szyna kolejowa
    loading
    rail
    Opis:
    Friction, rolling resistance and durability of rails and wheels at operation, belong to a number of the most important problems of railway transportation because they have strong impact on derailment, energy consumption and restorative maintenance. Various aspects of these problems are insufficiently investigated, have only partial solution. The sources of creep and slipping of a wheel on a rail and ways of its reduction are specified in the work. These approaches alongside with the traditional methods (lubrication, radial steering bogie, etc.) will ensure the reduction both the power and the thermal loading of the contact zone and wear rate of rails and wheels
    Źródło:
    Transport Problems; 2009, 4, 4; 33-42
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Friction interaction management in two-point "wheel-rail" tribocontact
    Sterowanie frykcyjną interakcją przy dwupunktowym kontakcie tarcia w układzie "koło-szyna"
    Autorzy:
    Kostyukevich, A.
    Gorbunov, N.
    Nozhenko, V.
    Kovtanets, M.
    Tsyganovskiy, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/375062.pdf
    Data publikacji:
    2012
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    wytrzymałość
    ozon
    układ koło-szyna
    strength
    ozone
    wheel-rail system
    contact patch
    concentration
    Opis:
    The results of studies on the possibility of application of ozonized air to reduce the wear and tear in the tribocontact "wheel-rail" are presented. The technique of influence estimation of ozonized air, as activator surface, on the friction interaction in wheel-rail contact, is proposed, the results of experimental research results are presented.
    Źródło:
    Transport Problems; 2012, 7, 3; 53-59
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electromagnetic system for improving the adhesion of wheels to rails
    Autorzy:
    Osenin, Yurij
    Antoshkina, Lidiya
    Sosnov, Igor
    Shapran, Evgeniy
    Chesnokov, Aleksei
    Powiązania:
    https://bibliotekanauki.pl/articles/375347.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    clutch
    wheel
    rail
    magnetization
    sand
    scale
    magnetite
    sprzęgło
    koło
    szyna
    namagnesowanie
    piasek
    skala
    magnetyt
    Opis:
    The article describes the design of a system used for the improvement of the adhesion of locomotive wheels to rails; the principle of which is based on the electromagnetic feeding of the contact area with the bulk material that has magnetic properties and high hardness (iron scale Fe3O4 and magnetite FeO×Fe2O3). The experimental results of laboratory and bench tests confirming the effectiveness of the proposed system compared with the existing devices using quartz sand to improve the adhesion of wheels to rails are presented. It is concluded that the use of an electromagnetic system for improving the particle supply to the wheel/rail interface is promising.
    Źródło:
    Transport Problems; 2019, 14, 1; 59-67
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of the electrification of sand on the interaction of friction in tribological contact
    Autorzy:
    Gorbunov, N.
    Kostyukevich, A.
    Kravchenko, K.
    Kovtanets, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/374311.pdf
    Data publikacji:
    2011
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    tribologiczny kontakt
    elektryfikacja piasku
    kontakt koło-szyna
    tribological contact
    electrification of sand
    contact wheel-rail
    Opis:
    In the article questions of the effectiveness of the presence of abrasive granular material in contact “wheel-rail” in the implementation of the optimal traction and its quantity on the surface of the rail. A method for determining the charge abrasive particles.Experimentally proved the effectiveness of electrification of sand before applying it to tribocontact to improve traction.
    Źródło:
    Transport Problems; 2011, 6, 4; 111-118
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kinematics of point-to-point contact of wheels with a rails
    Kinematyka dwupunktowego kontaktu koła z szyną
    Autorzy:
    Golubenko, A.
    Sapronova, S.
    Tkacenko, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/374533.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    układ koło-szyna
    kontakt dwupunktowy
    transport szynowy
    wheels-rails
    point-to-point contact
    railway transport
    Opis:
    The railway transport in a maximum degree is conservative. For example, the design of wheelsets, practically, has not changed for the last 150 years. Such a long life was given to this tendency by its high reliability and simplicity of the design. It is considered, that the rigid connection of wheels by means of an axis provides a self-centering of wheelset within the limits of a cross backlash of a railway. The tread contact surfaces have a difficult profile. Researches of many scientists, dealing with the questions of interaction of wheels with rails, show that the classical approach to the wheelset design leads to many problems of the railway transport. Therefore, the authors of this article strived for deeper consideration of kinematics of a movement of vehicle by a railway.
    Źródło:
    Transport Problems; 2007, 2, 3; 57-61
    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:
    Self-diagnosis method for checking the wayside systems for wheel-rail vertical load measurement
    Autorzy:
    Cortis, D.
    Giulianelli, S.
    Malavasi, G.
    Rossi, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/374395.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    wayside measurement system
    vertical forces
    wheel-rail contact forces
    self-diagnosis methods
    przydrożny system pomiarowy
    siła pionowa
    siły nacisku koło-szyna
    Opis:
    Nowadays, wayside measurement systems of wheel-rail contact forces have acquired great relevance for the monitoring of rolling stock, especially for freight trains. Thanks to these solutions, infrastructure managers can check and monitor the status of rolling stock and, when necessary, impose corrective actions for the railway companies. On the other hand, the evaluation of contact forces is part of the rolling stock authorisation process [1] and a mainstone for the study of the running stability. The data provided by these measurements could give useful information to correlate the wear of the track with the frequency of applied loads, helping in the development of a better maintenance strategy of railway networks [2]. In this paper, the monitoring of vertical forces is based on the SMCV (Vertical Loads Monitoring System) method, where shear strains of the rail web are measured with a simple combination of four electrical strain gauges, placed on both sides of the rail web along each span. The research has identified self-diagnosis methods for the SMCV system to ensure the reliability and the quality of the measurements and to extend the knowledge of the system. The recorded signals have been processed and converted into easily interpretable physical quantities by means of MATLAB® algorithm.
    Źródło:
    Transport Problems; 2017, 12, 4; 91-100
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Finite element modelling of contact interaction between wheel and rail with three-layered thin coating
    Modelowanie MES współpracy kontaktowej koła i szyny pokrytej trzema warstwami cienkich powłok
    Autorzy:
    Kolesnikov, V.
    Chebakov, M.
    Nasedkin, A.
    Sukhov, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/374883.pdf
    Data publikacji:
    2010
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    zagadnienie kontaktowe
    metoda elementów skończonych
    ANSYS
    powłoka cienka
    współpraca koło-szyna
    contact problem
    finite element method
    thin coating
    wheel-rail interaction
    Opis:
    The stress-strain of thin multilayered coatings covered the surface of the rail is studied near the region of side contact in turning motion. The stress-strain state is studied for various geometric and mechanical coating parameters' values. A theoretical and a finite element models are developed. Stress-strain state analysis has been made based on models developed and recommendations were given for an optimal coating parameters' selection.
    Źródło:
    Transport Problems; 2010, 5, 2; 119-124
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Railway noise reduction by the application of CHFC material on the rail
    Reduktion des Eisebahnlärms durch die Anwendung von CHFC Material
    Autorzy:
    Altenbaher, B.
    Goltnik, D.
    Rosi, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/375437.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    noise reduction
    rail
    anti noise system
    measurements
    railway noise
    CHFC material
    redukcja szumów
    szyna
    tłumienie hałasu
    pomiary
    hałas kolejowy
    materiał CHFC
    Opis:
    Traffic is the most widespread source of environmental noise. Railway noise has become increasingly common in urban areas in the past few decades. Therefore environmental requirements for railway operations regarding noise are becoming very strict and will become even tighter in future. In the present paper we present actual track-based field test performed on Slovenian Railways. The significant noise reduction (up to 30dBA) was achieved by the application of CHFC material on the rail using CL-E1 top anti noise system.
    Der Verkehr ist die am weitesten verbreitete Quelle von Umgebungslärm. Eisenbahnlärm nahm in den letzten Jahrzehnten in städtischen Gebieten immer mehr zu. Aus diesem Grund wurden die Umweltanforderungen für den Bahnverkehr bezüglich des Lärms immer strenger und werden in der Zukunft noch höher. In der vorliegenden Arbeit stellen wir den tatsächlichen Track-basierten Feldversuch auf der Slowenischen Bahn dar. Die deutliche Lärmreduzierung (bis 30 dBA)wurde durch die Anwendung von CHFC-Material auf der Schiene mithilfe des Cl-E1 Antirauschsystems erreicht.
    Źródło:
    Transport Problems; 2015, 10, 2; 5-14
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanical interaction of the rail transport car and joint irregularity
    Autorzy:
    Shpachuk, Vladimir
    Chuprynin, Aleksandr
    Suprun, Tatiana
    Kovalenko, Andriy
    Powiązania:
    https://bibliotekanauki.pl/articles/2091238.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    railway rolling stock
    four-axle car
    track
    ballast
    joint irregularity
    trailing rail
    facing rail
    tabor kolejowy
    wagon czteroosiowy
    tor
    podsypka
    nierówność spoiny
    szyna czołowa
    Opis:
    Mechanical models of a transport system “carriage - track” while crossing a joint irregularity are proposed. An investigation was conducted on the peculiarities of static, shock and dynamic interaction between the four-axle car and the track, considering tram wheelsets motion features over joint irregularity. A method to solve the equations of a mathematical model of static, shock and dynamic interaction is developed. Numerical analysis is used to determine deflections of the facing rail under the first sleeper for each phase of motion depending on motion phases, and car load and speed.
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2021, 113; 173--189
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research of the defective frog wing OF 1/11 mark
    Autorzy:
    Gavrilovs, P.
    Ivanovs, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/375481.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    defective rail
    point switch
    wing
    top
    base
    frog
    mark
    hardness
    elements
    metal
    metal structure
    wadliwa szyna
    punkt przełączenia
    łopatka
    wierzchołek
    podstawa
    zwrotnica napowietrzna
    znacznik
    twardość
    elementy
    struktura metalu
    Opis:
    In this article, for the first time, research of the defective frog wing of the 1/11 mark on the Latvian Railway has been carried out. In the process of which was collected, processed and the analysis of points defects on the Latvian Railway was carried out for eight compartments of the track distance during 2014, 2015 and 2016 (Developed a chief of defectoscopy shop V. Glotov, approved CD the chief of the distance V. Makedon). The frog wing of the 1/11 mark (the 60 E1 DO 04 07 frog type) was considered according to the basic classification of the defects, and an analysis and research of the cause of its fracture were carried out.
    Źródło:
    Transport Problems; 2017, 12, 4; 119-126
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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