Research on tread wear of metro wheel under different braking conditions
In order to study the influences of braking methods on the tread wear of subway wheel,a wheel-shoe thermo-mechanical coupling finite element model and a vehicle dynamics model containing flexible wheel pairs were established respectively by combina-tion of ANSYS and SIMPACK softwares.At the same time,the effects of different braking initial speed and braking deceleration on wheel tread temperature,tread hardness,contact stress between tread and shoe,and braking distance are considered,and the pat-terns of wheel-shoe wear,wheel-rail wear and total tread wear under different braking modes are analyzed.The results show that the tread wear increases with the increase of braking initial speed.With the increase of braking deceleration,the wheel-shoe wear and total wear increase while the wheel-rail wear decreases.The total tread wear is mainly affected by the wheel-shoe wear during braking.
tread wear of metro wheelshoe brakingbraking decelerationfinite element model of thermomechanical couplingmodified Archard model
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