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Wyświetlanie 1-15 z 17
Tytuł:
Influence of nonmetallic inclusions on microbreaks formation in wheel steel and railway wheels
Wpływ wtrąceń niemetalowych na powstanie mikropęknieć w stalach kołowych i kołach kolejowych
Autorzy:
Gubenko, S.
Proidak, Y.
Kozlovsk'yy, A.
Shramko, O.
Is'kov, M.
Powiązania:
https://bibliotekanauki.pl/articles/374679.pdf
Data publikacji:
2008
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
koło kolejowe
mikropęknięcia
railway wheels
microbreaks
Opis:
It is well known that formation of defects of many types during railway wheels service somehow or other is connected to nonmetallic inclusions in wheel steel. Microbreakes connected with nonmetallic inclusions have different origin. The first one is "deformational", the second is "thermal" and the third is "hydrogenous". The objective of this work is the study of nature of microbreaking in wheel steel relative to nonmetallics. Mechanisms of microbreaking of all types near different nonmetallics had been investigated and their influence on safety threshold of railway wheels had been analyzed herein.
Źródło:
Transport Problems; 2008, 3, 3; 77-81
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of possibility of local laser strengthening of railway wheels
Badanie możliwości lokalnego hartowania laserowego kół kolejowych
Autorzy:
Gubenko, S.
Proidak, Y.
Shramko, A.
Powiązania:
https://bibliotekanauki.pl/articles/375192.pdf
Data publikacji:
2012
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
koło kolejowe
hartowanie laserowe
railway wheel
laser strengthening
Opis:
It was shown possibility and necessity of local laser strengthening of cove zone of railway wheels tread by coming out of bainite structure.
Źródło:
Transport Problems; 2012, 7, 1; 129-134
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Two-point wheel - rail contact investigation
Autorzy:
Golubenko, A.
Kostyukevich, A.
Tsyganovskiy, I
Nozhenko, V.
Powiązania:
https://bibliotekanauki.pl/articles/374287.pdf
Data publikacji:
2011
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
koło kolejowe
symulacja numeryczna
wheel
two-point contact
numerical simulation
Opis:
This paper describes a wheel - rail contact for a case when one contact point is located on the wheel tread while the other is on the wheel flange. The locations of these points are determined for both wheels for given lateral displacement and yaw angle of a wheelset. Numerical simulation results are presented for new and worn rail-wheel profiles in order to demonstrate a developed algorithm.
Źródło:
Transport Problems; 2011, 6, 3; 115-122
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:
Modification of the adhesive force by changing the radial reaction on vehicle wheels
Autorzy:
Jilek, Petr
Krmela, Jan
Berg, Jan
Powiązania:
https://bibliotekanauki.pl/articles/2203856.pdf
Data publikacji:
2021
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
vehicle
SkidCar
wheel
adhesive force
radial force
pojazd
koło
siła przyczepności
siła promieniowa
Opis:
This article deals with the possibilities of adhesion force changes of a road vehicle. The authors present the possibilities of reducing the adhesion force of road vehicles and, at the same time, present their own system for changing the radial reaction of the vehicle wheels. This system removes the disadvantages of a commercially available SkidCar system. A representative road test is chosen in the article to determine the stability in a straight-line drive. Furthermore, the authors report the courses of characteristic parameters describing the behavior of a vehicle for driving a conventional car on a sliding surface and compared to the 50 % radial reaction of a vehicle driven with the SlideWheel on dry asphalt. It is clear from the measured runs that it is possible to change the adhesion force by changing the adhesion weight transmitted by the vehicle wheels. The use of the proposed SlideWheel system is possible for the purpose of verifying vehicle stability, while improving the driver's ability to operate the vehicle under reduced-adhesion conditions. The main goal of this paper is to design a system for reducing the adhesive force in an experimental car and perform experimental measurements.
Źródło:
Transport Problems; 2021, 16, 1; 179--186
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improvement of working conditions of the freight locomotive running gear
Улучшение условий работы ходовой части грузового локомотива
Autorzy:
Tumanishvili, G.
Natriashvili, T.
Goletiani, G.
Zviadauri, V.
Nadiradze, T.
Powiązania:
https://bibliotekanauki.pl/articles/374665.pdf
Data publikacji:
2016
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
freight locomotive
wheel
rail
friction
wear
derailment
lokomotywa towarowa
koło
kolej
tarcie
stabilność
Opis:
To improve the working conditions of the electric locomotive running part, it is necessary to decrease unsprung masses, lateral loads and the angle of attack and provide the third body with proper tribotechnical properties. A new scheme of the freight electric locomotive running gear is elaborated in the work, which ensures a decrease of unsprung masses, relative sliding of a wheel on the rail and an angle of attack that provides resistance to the destruction of the third body in the contact zone.
Для улучшения условий работы ходовой части электровоза зону контакта колеса и рельса необходимо уменьшить необрессоренные массы, поперечные силы и угол атаки и обеспечить наличие третьего тела с необходимыми триботехническими свойствами. В работе приведена новая схема ходовой части грузового электровоза, которая позволяет уменьшить относительную скорость скольжения колеса по рельсу и угол атаки, что повышает устойчивость третьего тела к разрушению.
Źródło:
Transport Problems; 2016, 11, 3; 103-109
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possibilities of increasing the durability of chain wheels of armoured-face conveyors
Autorzy:
Wieczorek, A.
Powiązania:
https://bibliotekanauki.pl/articles/374811.pdf
Data publikacji:
2017
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
tribology
wear
chain wheel
armoured face conveyor
tribologia
zużycie
koło łańcuchowe
zbrojony przenośnik czołowy
Opis:
The main objective of the study was to demonstrate the possibility of replacing the materials of domestic and foreign production currently used for chain drums with alternative materials. ADIs were selected as materials that may replace the cast steels used so far. L35GSM cast steel, commonly used for mining chain wheels and austempered ductile iron, conforming with the requirements of EN-GJS-1400-1 quality grade were subjected to wear tests. On the basis of the experimental studies it has been observed that for almost all the combinations of destructive factors considered, the ADI in question was characterised by a wear resistance better than that in the case of the L35GSM cast steel used so far. In addition, it has been found that the ADI has favourable features predestining it for use in the production of chain drums for armoured-face conveyors.
Źródło:
Transport Problems; 2017, 12, 3; 71-82
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of wear mechanism of tread during operation of railway wheels
Badanie mechanizmu zużycia powierzchni tocznej podczas eksploatacji kół kolejowych
Autorzy:
Gubenko, S.
Proidak, Y.
Powiązania:
https://bibliotekanauki.pl/articles/374924.pdf
Data publikacji:
2012
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
zużycie
koło kolejowe
odkształcenie plastyczne
wear
railway wheel
plastic deformation
formation of white layer
Opis:
Causes of wear particles formation on railway wheels tread were investigated. Structural factors connecting with plastic deformation, formation of "white layer", and also with non-metallic inclusions and corrosive products of wheel steel, defining wear of railway wheels tread during operation were fixed.
Źródło:
Transport Problems; 2012, 7, 3; 119-125
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using a wheel pair with a counter-flange to prevent derailment
Autorzy:
Osenin, Y.
Degtyareva, L.
Osenina, G.
Sergienko, O.
Chesnokov, A.
Powiązania:
https://bibliotekanauki.pl/articles/374999.pdf
Data publikacji:
2017
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
wheel pair
derailment
wheel flange
railway track
para kół
wykolejenie
koło kołnierzowe
podkład kolejowy
Opis:
The authors propose an engineering solution for a wheel pair with a counter-flange that satisfies the existing standards of vertical and horizontal dynamics and the movement stability index. An improved profile of a rail wheel with a counter-flange is developed. It provides additional contact in the horizontal plane in the situation of transverse vibrations of the wheel pair against the rail track, adds to carriage stability and increases the wheel’s resistance to derailment when passing a curved part of the tracks or when rails deflect due to force interaction. The wheel pair profile is stabilized with an additional running track and counter-flange that prevents derailment when base flange of the wheel rolls onto the working surface of the rail or when there is a way spacer due to rail spring deformation. The proposed design of the wheel pair is covered by an Ukrainian utility model patent.
Źródło:
Transport Problems; 2017, 12, 2; 13-18
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:
Effects of rail-wheel parameters on vertical vibrations of vehicles using a vehicle–track-coupled model
Autorzy:
Steišūnas, Stasys
Bureika, Gintautas
Gorbunov, Mykola
Powiązania:
https://bibliotekanauki.pl/articles/961512.pdf
Data publikacji:
2019
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
railway transport
wheel flat
rail irregularities
mathematical modeling
transport kolejowy
koło ze spłaszczeniem
nieregularność szyn
modelowanie matematyczne
Opis:
This paper presents an insight into mathematical analysis of dynamic models of the vehicle–track system. After identification of its advantages and disadvantages, an improved three-dimensional "vehicle–track" system of a mathematical model is presented. It not only assesses the influence of realistic track irregularities but also on all elements of the railway structure: rail, rail pads, sleepers, ballasts, and subballast parameters on the wagon’s movement smoothness. Based on the expanded mathematical model of the “vehicle–track” dynamic system, the dynamic process of the wagon was theoretically studied, and the effect of track with irregularities on the vibrations of the wagon elements was studied. The final conclusions and recommendations are presented.
Źródło:
Transport Problems; 2019, 14, 3; 27-39
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of tribology theoretical bases for working out of resource-saving systems on railway transportation
Autorzy:
Shapovalov, V.
Lubyagov, A.
Kharlamov, A.
Powiązania:
https://bibliotekanauki.pl/articles/375589.pdf
Data publikacji:
2017
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
lubrication
resource
wheel flange
friction
tribotechnics
tribology
transport
dents
smarowanie
sposoby
koło kołnierzowe
tarcie
tribotechnika
tribologia
wcięcie
Opis:
In this article we consider the increase of the resource of wheelsets of cars and locomotives. We give general data on present research in the field of tribotechnical systems, and offer alternative variants of development of domestic tribotechnical systems for railway transportation, which can be useful to replace foreign systems. The systems capable of increasing the reliability of a railway branch are described.
Źródło:
Transport Problems; 2017, 12, 2; 137-146
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
Wyświetlanie 1-15 z 17

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