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2020 | OriginalPaper | Chapter

Research and Verification on the Nonlinear Characteristics of Wheel/Rail Equivalent Conicity

Authors: Ziqiang Xu, Xiaoqing Dong

Published in: Advances in Dynamics of Vehicles on Roads and Tracks

Publisher: Springer International Publishing

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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.
Literature
1.
go back to reference 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) 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)
2.
go back to reference Xu, Z.Q.: Research on limit value of equivalent conicity based on lateral stability of EMU trains. China Railway 12(12), 29–34 (2017) Xu, Z.Q.: Research on limit value of equivalent conicity based on lateral stability of EMU trains. China Railway 12(12), 29–34 (2017)
3.
go back to reference 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) CrossRef 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) CrossRef
4.
go back to reference True, H.: Railway vehicle chaos and asymmetric hunting. Veh. Syst. Dyn. 20(sup1), 625–637 (2007) CrossRef True, H.: Railway vehicle chaos and asymmetric hunting. Veh. Syst. Dyn. 20(sup1), 625–637 (2007) CrossRef
5.
go back to reference Mazzola, L., Alfi, S., et al.: Limit wheel profile for hunting instability of railway vehicles. In: Non-smooth Problems in Vehicle Systems Dynamics (2008) Mazzola, L., Alfi, S., et al.: Limit wheel profile for hunting instability of railway vehicles. In: Non-smooth Problems in Vehicle Systems Dynamics (2008)
6.
go back to reference Polach, O.: Wheel profile design for target conicity and wide tread wear spreading. Wear 271(1), 195–202 (2011) CrossRef Polach, O.: Wheel profile design for target conicity and wide tread wear spreading. Wear 271(1), 195–202 (2011) CrossRef
7.
go back to reference 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) 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)
8.
go back to reference 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) 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)
9.
go back to reference 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., Nicklisch, D.: Wheel/rail contact geometry parameters in regard to vehicle behaviour and their alteration with wear. Wear 366, 200–208 (2016)
10.
go back to reference Polach, O.: Characteristic parameters of nonlinear wheel/rail contact geometry. Veh. Syst. Dyn. 48(Sup1), 19–36 (2010) CrossRef Polach, O.: Characteristic parameters of nonlinear wheel/rail contact geometry. Veh. Syst. Dyn. 48(Sup1), 19–36 (2010) CrossRef
Metadata
Title
Research and Verification on the Nonlinear Characteristics of Wheel/Rail Equivalent Conicity
Authors
Ziqiang Xu
Xiaoqing Dong
Copyright Year
2020
DOI
https://doi.org/10.1007/978-3-030-38077-9_79

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