The influence of high-frequency vibrations on derailment stability coefficient of cars at wheel flange climbing on the rail

N. V. Bezrukavyy

Abstract


Purpose. Taking into account the traffic safety priority on the railway transport the search of factors promoting increase of derailment stability coefficient is an actual task. Purpose of the paper is the influence researches of the high-frequency vibrations on the train traffic safety parameter. In this case the special form of the wheel rim, at which its rigidity changes according to the harmonious law, was considered as a source of vibrations. Methodology. For the analysis of the vibration influence on the change of friction coefficient values the methods of so called vibrational mechanics were used. For determination of vibration amplitudes through moving the wheel flange points the finite-elements method was also used in the paper. Findings. During calculations it was established that the derailment stability coefficient to a great extent depends on the friction coefficient between wheel and rail. The paper shows that the friction coefficient in turn is influenced by the high-frequency vibrations. The form of the wheel rim was considered as a vibration source and the parameters characterizing vibration were calculated. It was given the quantitative estimation of the friction coefficient change under the vibration influence. It was also scientifically based the high-frequency vibration influence on the derailment stability coefficient. Originality. The paper proved the possibility of high-frequency vibration influence on the derailment stability coefficient. The studies theoretically substantiated the traffic safety increase in the presence of vibrations in the contact area of the wheel flange with the rail caused by special form of the wheel disc. Practical value. It is shown that the use of undulating wheel disc form do not constitute a threat to the traffic safety, and the availability of high-frequency vibration can reduce the derailment probability.


Keywords


derailment stability coefficient of a car; friction coefficient; high-frequency vibrations

References


Blekhman I.I. Vibratsionnaya mehanika [Vibrational Mechanics]. Moscow, Fizmatlit Publ., 1994. 400 p.

Blokhin Ye.P., Korotenko M.L., Klimenko I.V. Graficheskoye predstavleniye kriteriya Nadalya [A graphical representation of the Nadal's criterion]. Vіsnyk Dnіpropetrovskho natsіonalnoho unіversitetu zalіznychnoho transportu іmenі akademіka V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2010, issue 35, pp. 7-9.

Chelomey V.N. Vibratsii v tehnike. Tom 6: Zashchita ot vibratsii i udarov [Vibrations in technology, Vol. 6 Protection from vibrations and blows]. Moscow, Mashinostroyeniye Publ., 1981. 456 p.

Normy dlya rascheta i proektirovaniya vagonov zheleznykh dorog MPS kolei 1520 mm (nesamohodnykh) [Norms for calculation and design of railway wagons of the Russian Federation Ministry of Railways of the track gauge 1520 mm (non self-propelled)]. Moscow, GosNIIV – VNIIZhT Publ., 1996. 319 p.

Vagony gruzovyye i passazhirskiye. Metody ispytaniy na prochnost i khodovyye kachestva [Freight and passenger cars. Methods of testing for strength and ride quality]. Moscow, GosNIIV Publ., 1984. 51 p.

Ushkalov V.F. O rabote friktsionnykh dempferov vagonov pri nalichii v vozmushcheniyakh vysokochastotnykh sostavlyayushchikh [About work of friction dampers of cars at presence of high frequency components in disturbances]. Tezisy dokladov Vsesoyuznogo soveshchaniya ”Mekhanika nazemnogo transporta” [Abstracts of the All-Union Conf. “Mechanics of surface transport”]. Kyiv, 1977. 144 p.

Shevchenko V.V., Hnennyi O.M. Otsinka ekonomichnoi efektyvnosti zakhodiv z pidvyshchennia bezpeky rukhu poizdiv [Assessment of economic efficiency of measures to improve traffic safety]. Vіsnyk Dnіpropetrovskoho natsіonalnoho unіversitetu zalіznychnoho transportu іmenі akademіka V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2009, issue 28, pp. 287-290.

Cheli F., Corradi R. On rail vehicle vibrations induced by track unevenness: Analysis of the excitation mechanism. Journal of Sound and Vibration, 2011, vol. 330, issue 15, pp. 3744-3765.

Wang W.J., Shen P., Song J.H., Guo J., Liu Q.Y., Jin X.S. Experimental study on adhesion behavior of wheel rail under dry and water conditions. Wear, 2011, no. 271, issues 9-10, pp. 2699-2705.

Greif R., Marquis B. Application of Nadal limit in the prediction of wheel climb derailment. ASME/ASCE/IEEE 2011 Joint Rail Conference. Pueblo, 2011. Paper No. JRC2011-56064.

Iwnicki S.D. Handbook of Railway Vehicle Dynamics. London, CRC Press Publ., 2006. 527 p.

Descartes S., Saulot A., Godeau C., Bondeux S., Dayot C., Berthier Y. Wheel flange rail gauge corner contact lubrication: Tribological investigations. Wear, 2011, no. 271, vol. 1-2, pp. 54-61.

Zeng J., Wu P. Study on the wheel rail interaction and derailment safety. Wear, 2011, vol. 265, issues 9-10, pp. 1452-1459.


GOST Style Citations


1. Блехман, И. И. Вибрационная механика / И. И. Блехман. – М. : Физматлит, 1994. – 400 с.

2. Блохин, Е. П. Графическое представление критерия Надаля / Е. П. Блохин, М. Л. Коротенко, И. В. Клименко // Вісник Дніпропетр. нац. ун-ту залізн. трансп. ім. акад. В. Лазаряна. – Д., 2010. – Вип. 35. – С. 7–9.

3. Вибрации в технике. В 6 т. Т. 6. Защита от вибрации и ударов / [ред. совет В. Н. Челомей]. – М. : Машиностроение, 1981. – 456 с.

4. Нормы для расчета и проектирования вагонов железных дорог МПС колеи 1520 мм (несамоходных). – М. : ГосНИИВ – ВНИИЖТ, 1996. – 319 с.

5. ОСТ 24.050.037-84. Вагоны грузовые и пассажирские. Методы испытаний на прочность и ходовые качества. – М. : ГосНИИВ, 1984. – 51 с.

6. Ушкалов, В. Ф. О работе фрикционных демпферов вагонов при наличии в возмущениях высокочастотных составляющих / В. Ф. Ушкалов, В. В. Кулябко // Механика наземного транспорта : тез. докл. Всесоюзного совещ. (Днепропетровск, 1977). – Киев, 1977. − С. 58−62.

7. Шевченко, В. В. Оцінка економічної ефективності заходів з підвищення безпеки руху поїздів / В. В. Шевченко, О. М. Гненний // Вісник Дніпропетр. нац. ун-ту залізн. трансп. ім. акад. В. Лазаряна. – Д., 2009. – Вип. 28. – С. 287–290.

8. Cheli, F. On rail vehicle vibrations induced by track unevenness: Analysis of the excitation mechanism / F. Cheli, R. Corradi // Journal of Sound and Vibration. – 2011. – Vol. 330.− Issue 15. – P. 3744–3765.

9. Experimental study on adhesion behavior of wheel rail under dry and water conditions / W. J. Wang, P. Shen, J. H. Song, J. Guo, Q. Y. Liu, X. S. Jin // Wear. – 2011. – Vol. 9–10, № 271. – P. 2699–2705.

10. Greif, R. Application of Nadal limit in the prediction of wheel climb derailment / R. Greif, B. Marquis // Proc. of the ASME/ASCE/IEEE 2011 Joint Rail Conf. (16.03-18.03.2011). – Pueblo : ASME. − Paper No. JRC2011-56064.

11. Iwnicki, S. D. Handbook of Railway Vehicle Dynamics / S. D. Iwnicki. – London : CRC Press, 2006. – 527 p.

12. Wheel flange/rail gauge corner contact lubrication: Tribological investigations / S. Descartes, A. Saulot, C. Godeau et al. // Wear. – 2011. –Vol. 1–2, № 271. – P. 54–61.

13. Zeng, J. Study on the wheel/rail interaction and derailment safety / J. Zeng, P. Wu // Wear. – 2011. –Vol. 9–10, № 265. – P. 1452–1459.



DOI: https://doi.org/10.15802/stp2013/16612

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

 

ISSN 2307–3489 (Print)
ІSSN 2307–6666 (Online)