Rail profile grinding has been proved to be an effective solution to slow down the wear of rails, thus prolonging the rail service life significantly. However, the damage of rails in different radius curves present different symptoms. This article investigates several optimization strategies for the design of rail-grinding profiles to be used on different radius heavy-haul railway curves, aiming to reduce wear on curves and improve the dynamic performance of vehicles. Based on the asymmetric-grinding methodology, one of the most popular methodologies for designing the profiles of rails, this paper presents illustrated optimization strategies for 400 m, 500 m, 600 m, 800 m, and 1500 m radius heavy-haul railway curves. To validate the benefits of optimized profiles, the effects of original and designed profiles on the heavy-haul vehicle are simulated adopting an SIMPACK model. The simulated results show that the wheel–rail dynamic interactions for all different radius curve segments are improved, the rail side wear on a small radius and the wheel–rail dynamic indexes on big radius are obviously reduced.
Application of a Design Methodology for Rail Asymmetric-Grinding Profiles on Different Radius Curves of Heavy-Haul Railway
First International Conference on Rail Transportation 2017 ; 2017 ; Chengdu, Sichuan Province, China
ICRT 2017 ; 586-592
13.03.2018
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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