Abstract
This paper aims at the influence of nonlinear equivalent conicity with the same nominal equivalent conicity on EMU (Electric Multiple Units) motion attitude based on the wheel/rail nonlinear contact theory. Four worn wheels were considered in this paper, it was found that wheels with same normal equivalent conicity had significant differences on wheel/rail interactions. A new evaluation method was proposed: based on statistics data, the wheel/rail contact condition was identified with “nonlinear factor” and “nonlinear equivalent conicity” derived by equivalent conicity range from 1 mm to 6 mm. Both field tests and simulations indicated that the normal equivalent conicity couldn’t accurately reflect the wear condition of wheel/rail contact. The proposed new indexes based on nominal equivalent conicity and the slope of equivalent conicity curve would reflect the nonlinear characteristics of wheel/rail contact more accurately. It is an effective method to evaluate the relationship between wheel/rail nonlinear contact condition and vehicle dynamic performance.
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References
Dong, X.Q., Wang, Y.M., et al.: Design and application of thin flange wheel tread profiles for CRH3C EMUs. J. China Railway Soc. 36(2), 11–17 (2014)
Xu, Z.Q.: Research on limit value of equivalent conicity based on lateral stability of EMU trains. China Railway 12(12), 29–34 (2017)
Gan, F., Dai, H.Y., et al.: Wheel-rail wear progression of high speed train with type S1002CHN wheel treads. Wear 328–329, 569–581 (2015)
True, H.: Railway vehicle chaos and asymmetric hunting. Veh. Syst. Dyn. 20(sup1), 625–637 (2007)
Mazzola, L., Alfi, S., et al.: Limit wheel profile for hunting instability of railway vehicles. In: Non-smooth Problems in Vehicle Systems Dynamics (2008)
Polach, O.: Wheel profile design for target conicity and wide tread wear spreading. Wear 271(1), 195–202 (2011)
Cui, D.B., Li, L., Wang H.Y., et al.: High-speed EMU wheel re-profiling threshold for complex wear forms from dynamics viewpoint. Wear 338, 307–315 (2015)
Dong, X.Q., Xu, Z.Q., Shi, F.B., et al.: The field test research for running stability of EMU in bogie alarm. Railway Locomotive Car 37(5), 43–49 (2017)
Polach, O., Nicklisch, D.: Wheel/rail contact geometry parameters in regard to vehicle behaviour and their alteration with wear. Wear 366, 200–208 (2016)
Polach, O.: Characteristic parameters of nonlinear wheel/rail contact geometry. Veh. Syst. Dyn. 48(Sup1), 19–36 (2010)
Acknowledgments
The authors are grateful for the support of The Research and Development Project of Science and Technology of China Railway Corporation 2017J011-B 2017J009-M; China Academy of Railway Sciences fund project 2017YJ009.
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Xu, Z., Dong, X. (2020). Research and Verification on the Nonlinear Characteristics of Wheel/Rail Equivalent Conicity. In: Klomp, M., Bruzelius, F., Nielsen, J., Hillemyr, A. (eds) Advances in Dynamics of Vehicles on Roads and Tracks. IAVSD 2019. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-38077-9_79
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DOI: https://doi.org/10.1007/978-3-030-38077-9_79
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