Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4986836 | Wear | 2016 | 8 Pages |
Abstract
A numerical procedure for the simulation of rail profile wear is proposed and applied to a heavy-haul line in China. The procedure includes a coupling dynamics model of the freight vehicle and track, a Non-Hertzian contact model, and a material wear model. Freight vehicles equipped with different types of three-piece bogies are considered in the dynamics model. The track is considered as a 3-layer model with rails, sleepers and ballast masses. Each rail of the track is modeled with a Timoshenko beam on discrete sleepers. A moving sleeper support model is developed to simulate the effect of the periodical discrete sleepers on the vehicle/track interaction. Kalker׳s non-Hertzian contact model is modified as the post-calculation for the local contact analysis. The wear depth in the contact patch is based on Archard׳s model. Extensive field measurements of the wheel/rail profile have been carried out on the curves of the Shuohuang heavy-haul line. Comparisons between simulated and measured rail profiles have been conducted. The shapes of the worn rail profiles of the simulation broadly agree with the field measurements.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Xia Li, Tao Yang, Jian Zhang, Yabo Cao, Zefeng Wen, Xuesong Jin,