Study of kinetic performance effect on wheel and rail wear using computer simulation

The study object is a “wheel - rail” system. The subject is the computer simulation of the system elements wear. The work objective is to investigate the wheel and rail wear dependence on the kinetic performance parameters. The problems solved here are analysis of the earlier proposed mathematical functions describing the kinetic performance for the presence of extremes, the functional behavior (growth, decrease, monotonicity, and unimodality, etc.) in various parameter ranges; implementation of the computer simulation of the wheelpair movement by rail with the quantitative estimation of the wheel and rail wear with various kinetic performance parameters; to determine qualitative influence patterns of the kinetic wear performance. The simulation is fulfilled by the software package “Universal Mechanism”. As a result, values of various characteristics related to wear (power, total and specific friction work) under different conditions of the kinetic friction performance are obtained. The conclusions are as follows. The kinetic friction performance parameters must be considered as they can significantly affect the wear within the range of the actual operating conditions in the course of the computer simulation. Under some conditions, there are cases when an increase in the friction coefficient is accompanied by a decrease in depreciation. It is proposed to continue the research in two main areas: determining the influence patterns on the kinetic friction performance and wear of the multiple actual factors, and studying the dynamic (at variable slip velocity) feature of friction effect on the parameter wear through the same procedure.

трение, износ, кинетическая характеристика, скорость скольжения, коэффициент трения, удельная работа, колесо, рельс, компьютерное моделирование, факторы, friction, wear, kinetic characteristic, slip velocity, friction coefficient, specific work, wheel, rail, computer simulation, factors

1. Bogdanov, V.М. Obespechenie ustoychivoy raboty sistemy koleso — rel's na otechestvennykh i zarubezhnykh zheleznykh dorogakh. [Ensuring stable operation of wheel – rail system on domestic and foreign railways.] Vestnik VNIIZHT, 2010, no. 2, pp. 10–14 (in Russian).

2. Pogorelov, D.Y. Komp'yuternoe modelirovanie dinamiki rel'sovykh ekipazhey. [Computer simulation of the railway vehicle dynamics.] Mekhanika i tribologiya transportnykh sistem — 2003: sb. dokladov mezhdunar. kongressa. [Mechanics and tribology of transport systems – 2003: Proc. Int. Congress.] Rostov-on-Don, 2003, vol. 1, pp. 226–231 (in Russian).

3. Pogorelov, D., et al. Use of Multibody System Approach for Torque and Drag Analysis of Long Drill Strings. 11th world congress computational mechanics. Barcelona, 2014, pp. 688–699.

4. Universal'nyy mekhanizm — programmnyy kompleks dlya modelirovaniya dinamiki mekhanicheskikh system. [Universal Mechanism - software for modeling the mechanical systems dynamics.] Computational Mechanics Laboratory, Bryansk State Technical University. Available at: http://www.umlab.ru (accessed: 20.02.16) (in Russian).

5. Kragelskiy, I.V., Dobychin, M.N., Kombalov, V.S. Osnovy raschetov na trenie i iznos. [Basics of calculations for friction and wear.] Moscow: Mashinostroenie, 1977, 526 p. (in Russian).

6. Kragelskiy, I.V., Gitis, N.V. Friktsionnye avtokolebaniya. [Self-excited frictional oscillations.] Moscow: Nauka, 1987, 182 p. (in Russian).

7. Evelson, L.I. Metodologiya matematicheskogo i komp'yuternogo modelirovaniya tribodinamicheskikh system. [Methodology of mathematical and computer modeling of tribodynamic systems.] Bryansk: BGITA, 2015, 204 p. (in Russian).

8. Evelson, L.I., et al. Postroenie bazy znaniy dlya sistematizatsii opyta issledovaniy vzaimodeystviya kolesa i rel'sa. [Development of knowledge base for systematization of research experience concerning interaction between wheels and rail.] Herald of Computer and Information Technologies, 2014, no. 4, pp. 21–26 (in Russian).

9. Zakharovв, S.М., Pogorelov, D.Yu., Simonov, V.A. Analiz vliyaniya parametrov ekipazha i puti na intensivnost' iznosa v sisteme koleso — rel's (na osnove polnogo faktornogo eksperimenta). [Analysis of influence of rolling stock and track parameters on indices determining wear rate at wheel – rail system.] Vestnik of the Railway Research Institute, 2010, no. 2, pp. 31–35 (in Russian).

10. Evelson, L.I. Nekotorye metody analiza tribologicheskoy informatsii. [Some methods of analyzing tribological information.] Journal of Friction and Wear, 2003, vol. 24, no. 3, pp. 323–328 (in Russian).

11. Evelson, L., Rafalovskaya, M. Multilevel information model of tribological systems. International Conference WOM-2011. Philadelphia, 2011, pp. 501.

12. Evelson, L., Rafalovskaya, M. Actuality and Perspectives of Triboinformatics. 5th World Tribology Congress. Torino, 2013, pp. 70–71.

13. Ignesti, M., Malvezzi, M., Marini, L., Meli, E., and Rindi, A. Development of a wear model for the prediction of wheel and rail profile evolution in railway systems. Wear, 2012, vol. 284/285, pp. 1–17.

14. Braghin, F., et al. A mathematical model to predict railway wheel profile evolution due to wear. Wear, 2006, vol. 261, pp. 1253–1264.