The Profile Analysis of Wheels and Rails of Different Wear Stages for Heavy-Haul Wagons

Abstract:

A large number of wheel and rail profiles of different wear stages are tracked and measured using the wheel/rail profile admeasuring apparatus for DaTong-QinHuangdao heavy-haul line. The finite element method (FEM) models and dynamic models of the contact between wheels and rails are both established for two working conditions (i.e., straight line and curve line). In addition, the corresponding parameters and indexes are obtained through the simulation and calculation. The results show that the maximum equivalent stress for the wheel profile of type II is lower than those of wheel profiles in other stages for the straight and curve lines. Its contact stress distribution is more uniform than others. The dynamics indexes including stationarity and stability of the standard wheel profiles ( i.e. LM) are the best. The indexes are gradually reduced along with the abrasion of wheel profiles. When passing the curve, the dynamics indexes of wheel profiles in each stage are reached the evaluation standard. The abrasion rate of wheels and rails can be reduced relatively when wheels are matched with the worn rails in the stable stage.

• Periodical: Applied Mechanics and Materials (Volumes 602-605)
• Pages: 291-294
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.602-605.291
• Online since: August 2014
• Authors: Tie Zhang*, Jun Zhang, Chuan Xi Sun
• Keywords: Dynamics Performance, Finite Element, Heavy-Haul, Profiles of Wheels, Rails, Wear

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