Wheel-Rail Contact Analysis considering the Deformation of Wheel and Axle

차륜 및 차축의 변형을 고려한 차륜-레일 접촉해석

  • Received : 2010.03.03
  • Accepted : 2010.06.28
  • Published : 2010.08.01

Abstract

A precise evaluation of the contact position and the distribution of contact pressure in a wheel-rail interface analysis is one of the most important procedures to predict fatigue life and wear of wheel and rail. This paper presents the analysis result of finite element method(FEM) to investigate how the deformation of a wheelset, which is the assembly of wheel and axle of a railroad vehicle, affect the contact analysis of wheel and rail. 3D-FEM was used to analyze three contact models; a model with only wheel, a model with wheelset, and a model with simplified wheel and rail geometry. The analysis result of the contact position and the distribution of contact pressure are discussed. It is shown that the analysis results of a model with wheelset represent largest value with respect to contact pressure and contact stress. Furthermore, it is found that the distribution of contact pressure and the contact position is highly affected by the deformation of wheel and axle. It is concluded that the deformation of axle should be considered to evaluate the exact contact parameters in a wheel-rail contact analysis.

Keywords

References

  1. Marshall, M. B., Lewis, R., Dwyer-Joyce, R. S., Olofsson, O. and Bjorklund, S., "Measuring Wheel/Rail Contact Stresses using Ultrasound," 14th International Wheelset Congress, 2004.
  2. Pau, M., Aymerich, F. and Ginesu, F., "Ultrasonic measurements of nominal contact area and contact pressure in a wheel-rail system," Proc. of Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, Vol. 214, No. 4, pp. 231-244, 2000. https://doi.org/10.1243/0954409001531333
  3. Pau, M., Leban, B. and Baldi, A., "Simultaneous subsurface defect detection and contact parameter assessment in a wheel-rail system," Wear, Vol. 265, No. 11-12, pp. 1837-1847, 2008. https://doi.org/10.1016/j.wear.2008.04.030
  4. Timoshennko, S. P. and Goodier, J. N., "Theory of Elasticity, 3rd Edition," McGraw-Hill, p. 414, 1970.
  5. Kalker, J. J., "Survey of wheel-rail rolling contact theory," Vehicle Syst. Dyn., Vol. 8, No. 4, pp. 317- 358, 1979. https://doi.org/10.1080/00423117908968610
  6. Telliskivi, T. and Olofsson, U., "Contact mechanics analysis of measured wheel-rail profiles using the finite element method," Proc. of Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, Vol. 215, No. 2, pp. 65-72, 2001. https://doi.org/10.1243/0954409011531404
  7. Sladkowski, A. and Sitarz, M., "Analysis of wheelrail interaction using FE software," Wear, Vol. 258, No. 7-8, pp. 1217-1223, 2005. https://doi.org/10.1016/j.wear.2004.03.032
  8. Enblom, R. and Berg, M., "Impact of non-elliptic contact modelling in wheel wear simulation," Wear, Vol. 265, No. 9-10, pp. 1532-1541, 2008. https://doi.org/10.1016/j.wear.2008.01.027
  9. Lee, D. H., Choi, H. Y., Kwon, S. J. and Ham, Y. S., "Analysis of wheel-rail contact with cylindrical elements," Proc. of KSPE Autumn Conference, pp. 773-774, 2009.
  10. Choi, H. Y., Lee, D. H., You, W. H. and Lee, J., "Contact Stress Analysis of Wheel-Rail for Rolling Stock Using FEM," Proc. of KSPE Autumn Conference, pp. 429-430, 2008.
  11. ABAQUS Version 6.4, "ABAQUS Analysis user's manual," Hibbit, Karlson & Sorensen, Inc., 2003.
  12. Ramanan, L., Kumar, R. K. and Sriraman, R., "Thermo-mechanical finite element analysis of a rail wheel," International Journal of Mechanical Sciences, Vol. 41, No. 4-5, pp. 487-505, 1999. https://doi.org/10.1016/S0020-7403(98)00078-2
  13. Vu-Quoc, L., Zhang, X. and Lesburg, L., "Normal and tangential force-displacement relations for frictional elasto-plastic contact of spheres," International J. of Solids and Structures, Vol. 38, No. 36-37, pp. 6455-6489, 2001. https://doi.org/10.1016/S0020-7683(01)00065-8