MODELING THERMAL EFFECTS IN BRAKING SYSTEMS OF RAILWAY VEHICLES

Abstract

The modeling of thermal effects has become increasingly important in product esign in different transport means, road vehicles, airplanes, railway vehicles, nd so forth. The thermal analysis is a very important stage in the study of raking systems, especially of railway vehicles, where it is necessary to brake uge masses, because the thermal load of a braked railway wheel prevails ompared to other types of loads. In the braking phase, kinetic energy transforms nto thermal energy resulting in intense heating and high temperature states of ailway wheels. Thus induced thermal loads determine thermomechanical ehavior of the structure of railway wheels. In cases of thermal overloads, which ainly occur as a result of long-term braking on down-grade railroads, the eneration of stresses and deformations occurs, whose consequences are the ppearance of cracks on the rim of a wheel and the final total wheel defect. The mportance to precisely determine the temperature distribution caused by the ransfer process of the heat generated during braking due to the friction on ontact surfaces of the braking system makes it a challenging research task. herefore, the thermal analysis of a block-braked solid railway wheel of a 444 lass locomotive of the national railway operator Serbian Railways is processed n detail in this paper, using analytical and numerical modeling of thermal effects uring long-term braking for maintaining a constant speed on a down-grade ailroad.

Keywords

Dates

  • Submission Date2012-05-03
  • Revision Date2012-07-09
  • Acceptance Date2012-07-19

DOI Reference

10.2298/TSCI120503188M

References

  1. Saifullah, A.B.M., Masood, S.H., Finite Element Thermal Analysis of Conformal Cooling Channels in Injection Moulding, 5th Australasian Congress on Applied Mechanics, ACAM 2007, Brisbane, Australia, 2007.
  2. Chandrupatla, T.R, Belegundu, A.D., Introduction to Finite Elements in Engineering, 3rd Edition, Prentice-Hall, 2002.
  3. Bhattacharyya, D. et al., Simulation of temperature distribution by finite element analysis on different components of the EXAFS beamline at INDUS-II synchrotron source, Sadhana, Vol. 30, Part 6, 2005, pp. 735.755.
  4. Bakar Abu, Abd. R. et al., Thermal Analysis of a Disc Brake Model Considering a Real Brake Block Milo.evi., M., et. al.: Modeling Thermal Effects in Braking Systems of Railway Vehicles
  5. Thilak, V.M.M. et al., Transient Thermal and Structural Analysis of the Rotor Disc of Disc Brake, International Journal of Scientific & Engineering Research Volume 2, Issue 8, 2011.
  6. Wen, S., Guo-Quan Lu, Finite-element modeling of thermal and thermomechanical behavior for threedimensional packaging of power electronics modules, The Seventh Intersociety Conference ITHERM 2000, Las Vegas, 2000.
  7. Ferguson, B.L., Li, Z., Freborg, A.M., Modeling heat treatment of steel parts, Computational Materials Science 34, 2005, pp. 274.281.
  8. Fujii, S. Saito, M., Transient Heat Transfer Analysis of High Speed Train Disc Brake Systems, 2011 SIMULIA Customer Conference, Barcelona, Spain, 2011.
  9. Oder, G. et al., Thermal and Stress Analysis of Brake Discs in Railway Vehicles, Advanced engineering 3 (1), 2009.
  10. Mijajlovi., M. et al., Mathematical Model for Analytical Estimation of Generated Heat During Friction Stir Welding. Part 1, Journal of Balkan Tribological Association, Vol. 17, No 2, 2011, pp. 179-191.
  11. Belhocine, A., Bouchetara, M., Study of the thermal behaviour of dry contacts in the brake discs, MECHANIKA 2011 17 (3), pp. 271- 278.
  12. ERRI B 169/RP 4 Standardization of coach wheelsets, Standardization of a block-braked solid wheel (rim diameter 920 mm) for coaches with a maximum speed of 160 km/h, Standard wheelsets for block brakes, Utrecht, 1993.
  13. ERRI B 169/RP 5 Standardisation des essieux, Methodes de surveillance des roues monoblocs (mesures immediates contre les ruptures des roues), Utrecht, 1993.
  14. ERRI B 169/RP 6 Standardisation des essieux, Methodes de surveillance des roues monoblocs en service, Methode aux ultrasons pour la determination non destructive des contraintes residuelles dans les jantes de roues monobloc, Utrecht, 1995.
  15. ERRI B 169/RP 8 Standardisation des essieux, Determination de la tenacite des roues monobloc en R7, Definition d`une methode d`essai et d`un critere d`acceptation, Utrecht, 1995.
  16. Be.ejac, Lj., Researching of the possibilities to predict the thermal overload of railway vehicles braked by blocks on basis of characteristics of the train and railtrack, Master Thesis, University of Ni., 2003.
  17. Milutinovi., D., Radosavljevi., A., Lu.anin, V., Temperature and Stress State of the Block-Braked Solid Wheel in Operation on Yugoslav Railways, FME Transaction 31, 2003, pp.15-20.
  18. ORE B 106/RP 12 Standardization of coaches, Standardization of a block-braked solid wheel (tread diameter 920 mm) for coaches with a top speed of 160 km/h, Basic calculations, Utrecht 1989.
  19. Jovanovi., R., Milutinovi., D., Modern Ways for Preventing the Damages Caused by the Railway Vehicle Solid Wheel Fractures (in Serbian), VI International Scientific Conference of Railway Experts - JU.EL, Vrnja.ka Banja, Serbia, 1999.
  20. Milutinovi., D., Tasi., M., Jovanovi., R., Thermal Load as a Primary Cause for the Fracture of the Block-Braked Solid Wheel (in Serbian), .eleznice, No 11-12, Belgrade, Serbia, 1999.
  21. UIC 510-2 Materiel remorque, Roues et essieux montes, Conditions concernant l`utilisation des roues de differents diametres, 3e edition, 1.1.1998.
  22. UIC 812-3 Technical specification for the supply of solid (monoblock) wheels in rolled non-alloy steel for tractive and trailing stock, 5th edition, 1.1.1984.
  23. ***, COMSOL Multiphysics , www.comsol.com/showroom/gallery/102/
  24. Stamenkovi., D., Milo.evi., M., Mijajlovi., M., Bani., M., Recommendations for the estimation of the strength of the railway wheel set press fit joint, Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, Vol. 226 Issue 1, 2012, pp. 48-61.
  25. Mijajlovi., M. et al., About the influence of friction coefficient on heat generation during friction stir welding, Proceedings of 12th International Conference on Tribology SERBIATRIB f11, Kragujevac, Serbia, 2011.
  26. Vainhal. V., Ko.nice i ko.enje vozova, Zavod za novinsko-izdava.ku i propagandnu delatnost J., Beograd, 1982.
  27. ORE B 169/RP1 Limites thermiques des roues et des sabots, Choix des parametres pour l`etude des limites thermiques des roues et des sabots, Utrecht, 1987.
Volume 16, Issue 12, Pages515 -526