Tribology of rail bogie

Railway bogie is the basic element that determines the force, kinematic, power and other parameters of the rolling stock, and its movement in the railway track has not been studied enough. Classical calculation of the kinematic and dynamic parameters of the bogie's motion with the determination of the position of its center of rotation, the instantaneous axes of rotation of wheelsets, the magnitudes and directions of all forces present a difficult problem even in quasi-static theory. The paper shows a simplified method that allows one to explain, within the limits of one article, the main kinematic and force parameters of the bogie movement (installation angles, clearance between the wheel flanges and side surfaces of the rails), wear and contact damage to the wheels and rails. Tribology of the railway bogie is an important part of transport tribology, the foundation of the theory of wheel-rail tribosystem, without which it is impossible to understand the mechanisms of catastrophic wear, derailments, contact fatigue, cohesion of wheels and rails. In the article basic questions are considered, without which it is impossible to analyze the movement of the bogie: physical foundations of wheel movement along the rail, types of relative motion of contacting bodies, tribological characteristics linking the force and kinematic parameters of the bogie. Kinematics and dynamics of a two-wheeled bogie-rail bicycle are analyzed instead of a single wheel and a wheelset, which makes it clearer and easier to explain how and what forces act on the bogie and how they affect on its position in the rail track. To calculate the motion parameters of a four-wheeled bogie, it is represented as two two-wheeled, moving each on its own rail. Connections between them are replaced by moments with respect to the point of contact between the flange of the guide wheel and the rail. This approach made it possible to give an approximate estimation of the main kinematic and force parameters of the motion of an ideal bogie (without axes skewing) in curves, to understand how the corners of the bogie installation and the gaps between the flanges of the wheels and rails vary when moving with different speeds, how wear and contact injuries arise and to give recommendations for their assessment and elimination.

sliding, coefficients of friction and adhesion, creepage curve, wheelset, railway bogie, installation angles, angle of approach, gaps in the railway track, wear, burring, head checks

1. GOST 27674 – 88. Trenie, iznashivanie i smazka. Terminy i opredeleniya. Moscow, Izdatel’stvo standartov Publ., 1992, 20 p.

2. Andrievskiy S. M. Bokovoy iznos rel'sov na krivykh [Lateral wear of rails on curves]. Trudy TsNII MPS [Works of TsNII MPS]. Moscow, Transzheldorizdat Publ., 1961, Vol. 207, 128 p.

3. Markov D. P. Tribologiya i ee primenenie na zheleznodorozhnom transporte [Tribology and its application in railway transport]. Moscow, Intext Publ., 2007, 405 p.

4. Chichinadze A. V. Osnovy tribologii (trenie, iznos, smazka) [Fundamentals of tribology (friction, wear, lubrication)]. Moscow, Mashinostroenie Publ., 2001, 664 p.

5. Myshkin N. K., Petrakovets M. I. Tribologiya. Printsipy i prilozheniya [Tribology. Principles and applications]. Gomel, IMMS NANB Publ., 2002, 304 p.

6. Isaev I. P., Golubenko A. L. Sovershenstvovanie eksperimental' nykh issledovaniy stsepleniya kolesa lokomotiva s rel'som [Improvement of experimental studies of adhesion of the locomotive wheel with the rail]. Zheleznye dorogi mira, 1988, no. 10, pp. 2 – 10.

7. Ershkov O. P. Raschet poperechnykh gorizontal'nykh sil v krivykh [Calculation of transverse horizontal forces in curves]. Trudy TsNII MPS [Works of TsNII MPS]. Moscow, Transzheldorizdat Publ., 1966, Vol. 301, pp. 184 – 188.

8. Golubenko A. L. Stseplenie kolesa s rel'som [Adhesion of wheel and rail]. Kiev, VPYuL Publ., 1993, 448 p.

9. Menshutin N. N. Issledovanie skol'zheniya kolesnoy pary elektrovoza pri realizatsii sily tyagi v ekspluatatsionnykh usloviyakh [Investigation of the slippage of an electric locomotive wheelset during the implementation of tractive power under operating conditions]. Trudy TsNII MPS [Works of TsNII MPS]. Moscow, Transzheldorizdat Publ., 1960, Vol. 188, pp. 113 – 132.

10. Lysyuk V. S., Kamenskiy V. B., Bashkatova L. V. Nadezhnost' zheleznodorozhnogo puti [Railway track reliability]. Moscow, Transport Publ., 2001, 286 p.

11. Kogan A. Ya. Dinamika puti i ego vzaimodeystvie s podvizhnym sostavom [Dynamics of the track and its interaction with the rolling stock]. Moscow, Transport Publ., 1997, 327 p.

12. Zakharov S. M., Bogdanov V. M. Obobshchenie peredovogo opyta tyazhelovesnogo dvizheniya: voprosy vzaimodeystviya kolesa s rel'som [Generalization of advanced experience of heavy haul traffic: issues of wheel — rail interaction]. Moscow, Intext Publ., 2002, 408 p.

13. Ivanochkin P. G., Zarif’yan A. A., Vasil’kova E. A. Osnovy mekhaniki podvizhnogo sostava. Ucheb. posobie. Ch. 1 [Fundamentals of rolling stock mechanics. Tutorial. Part 1]. Rostov-on-Don, FGBOU VPO RGUPS Publ., 2015, 58 p.

14. Zakharov S. M. Obobshchenie mirovogo opyta tyazhelovesnogo dvizheniya: upravlenie soderzhaniem sistemy koleso — rel's [Generalization of the world experience of heavy haul traffic: maintenance control of the wheel — rail system]. Moscow, Intext Publ., 2017, 420 p.

15. Turanov Kh. T., Yakupov A. R. Postroenie dinamicheskikh modeley ustoychivosti kolesa kolesnoy pary gruzovogo vagona pri vkatyvanii na golovku rel'sa [Construction of dynamic stability models of wheel in the wheelset of freight cars when rolling in on the rail head]. Transport: nauka, tekhnika, upravlenie [Transport: science, equipment, management], 2011, no. 7, pp. 8 – 14.

16. Timukhina E. N., Yakupov A. R. Matematicheskoe modelirovanie nagruzhennosti kolesnoy pary vagona s nesimmetrichno razmeshchennym gruzom pri vozdeystvii prostranstvennoy sistemy sil [Mathematical modeling of loading wheelset of a car with an asymmetrically placed load under the influence of a spatial force system]. Transport: nauka, tekhnika, upravlenie [Transport: science, equipment, management], 2011, no. 7, pp. 15 – 20.

17. Panov Yu. L., Panov A. Yu. Kinematika kolesnykh par vagonnoy telezhki [Kinematics of wheelsets of the car bogie]. Vestnik Nizhegorodskogo universiteta im. N. I. Lobachevskogo [Bulletin of the Nizhny Novgorod University n. a. N. I. Lobachevsky], 2013, no. 4, pp. 180 – 185.

18. Zharov I. A. Kvazistatsionarnoe dvizhenie kolesnoy pary v krivykh [Quasistationary motion of a wheelset in curves]. Vestnik VNIIZhT [Vestnik of the Railway Research Institute], 2001, no. 2, pp. 17 – 21.

19. Zharov I. A. Kvazistatsionarnoe dvizhenie telezhki v krivykh [Quasistationary motion of a bogie in curves]. Vestnik VNIIZhT [Vestnik of the Railway Research Institute], 2001, no. 4, pp. 32 – 37.

20. Verigo M. F. Prichiny rosta intensivnosti bokovogo iznosa rel'sov i grebney koles [Causes of increased lateral wear of rails and wheel flanges]. Moscow, Transport Publ., 1992, 46 p.

21. Buynosov A. P. Metody povysheniya resursa kolesnykh par tyagovogo podvizhnogo sostava [Methods for increasing lifecycle of wheelsets of traction rolling stock]. Moscow, GOU “Uchebnometodicheskiy tsentr po obrazovaniyu na zheleznodorozhnom transporte” [SEI “Educational and Methodological Center for Education in Railway Transport”] Publ., 2010, 224 p.

22. Vershinskiy S. V., Danilov V. N., Chelnokov I. I. Dinamika vagonov [Car dynamics]. Moscow, Transport Publ., 1978, 352 p.

23. Verigo M. F., Kogan A. Ya. Vzaimodeystvie puti i podvizhnogo sostava [Interaction of the track and rolling stock]. Moscow, Transport Publ., 1986, 560 p.

24. Shakhunyants G. M. Zheleznodorozhnyy put’ [Railway track]. Moscow, Transport Publ., 1987, 480 p.

25. Ershkov O. P. Skorosti dvizheniya poezdov v krivykh. Sb. nauch. tr. VNIIZhT [Traffic speed of trains in curves. Proc. of scientific papers of the JSC “VNIIZhT”]. Moscow, Transport Publ., 1988, 118 p.

26. Pevzner V. O. Bokovoy iznos — “bolezn'” izlechimaya [Side wear — curable “disease”]. Gudok newspaper, 19 November, 2002, р. 1.

27. Allen R. Operation of the wheel — rail system under high loads. International Railway Journal, 1999, no. 6, pp. 48 – 50.