The maintenance strategies of the worn wheels have an important impact on maintenance cost of railway. LM worn wheels of heavy haul wagons are often re-profiled to their original standard form, and this excessive removal of material could reduce the wheel service life. A new LM wheel profile reconstruction method was established by taking into account the geometrical characteristics of the LM wheel profile and applying the Non-Uniform Rational B-Spline theory. The design of LM thin flange re-profiling wheel can be accomplished by using Particle Swarm Optimization method which handles multiple objectives including train operation safety concerns, and minimizing material removal. A new wheel profile with a flange thickness of 32 mm can be designed by the integration of vehicle-track coupling dynamics model, and the results showed that the mean wear work is reduced by 55.97% compared with the original standard profile. Under the optimized wheel profile, the root mean square value of the lateral force and the maximum contact stress is reduced, and the amount of material removed is decreased. The design method can provide support for the LM wheel re-profiling maintenance, by designing the thin flange profiles of a flange thickness of 28∼33 mm.
Design method of LM thin flange wheel profile based on NURBS
Vehicle System Dynamics ; 59 , 1 ; 17-32
2021-01-02
16 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Wheel wear , wheel re-profiling , LM profile , PSO , NURBS
Wheel profile optimization procedure to minimize flange wear considering profile wear evolution
SAGE Publications | 2022
|Engineering Index Backfile | 1894
Engineering Index Backfile | 1894