Research on wheel flange crack damage and influencing factors of heavy haul locomotive on the curved track
In order to investigate the problem of frequent wheel flange crack damage in a high-power heavy haul locomotive operating on high-altitude multi-curved railway lines in China,a combined approach of theoretical analysis,numerical simulation,and field test is employed.First,based on multibody dynamics and stability theory,a vehicle dynamics model for the high-power heavy haul locomotive and a prediction model for wheel flange crack damage are respectively established.Next,the accuracy of the model is validated by comparing field test data with numerical simulation results.Finally,based on the characteristics of the operating route for the heavy haul locomotive,an analysis is conducted on the effects of curve radius,curve superelevation,curve gradient,and wheel flange lubrication on the damage pattern of wheel flange cracks.The research results indicate that continuous small radius curves are the main cause of wheel flange cracks in this heavy haul locomotive.In addition,wheel flange lubrication has a significant effect on the locomotive wheel flange crack damage.Therefore,the wheel-rail dynamic interaction can be reduced by setting appropriate route parameters and implementing effective wheel flange lubrication,and the occurrence of wheel flange cracks in the heavy haul locomotive can be minimized.
万方数据
维普
