Analysis of Wheel-rail Force Characteristics of Type A Metro Bogie with a Speed of 80 km/h

In this paper, the wheel-rail force analysis test is carried out on the type A metro vehicle equipped with a certain type bogie and the maximum operating speed is 80km/h. The purpose is to explore the characteristics of derailment coefficient, wheel unloading ratio and wheelset lateral force under different conditions. According to UIC518, the safety, ride index and stability of subway vehicles under AW0(AW0 means “no load”) and AW3(AW3 means “overload”) are evaluated. Through the analysis of this paper, it is found that when the train runs on the R300-meter curve, the various indicators are the largest, followed by the R500-meter curve, and the smallest on the straight line. the derailment coefficient and the wheelset lateral force of the motor car are greater than those of the trailer. The various wheel-rail force indicators of this type of subway bogie all meet the requirements.