Dynamic simulation and wear performance evaluation of active radial bogie
To explore the impact of active radial bogies on wheel rail wear when subway trains pass through curves,an active radial vehicle body dynamics model was built based on Simpack and Matlab/Simulink.Dynamic simulation indicators such as wheel rail lateral force,wheel offset angle,wheel set lateral displacement,and derailment coefficient were used to evaluate the vehicle's curve passing performance and safety.Finally,the JENDEL wear model was used to evaluate the wheel rail wear performance when the vehicle passes through curves.The research results are drawn as follows.It is reasonable to use roll angle velocity to compensate the filtered signal in real-time when developing control algorithms.After compensation,there is only a slight fluctuation between the actual action displacement of the actuator and the theoretical action displacement.When the vehicle passes through the curve,compared with conventional bogies,the active radial bogie has a 73.3％ decrease in the maximum wheel offset angle from 4.5 mrad to 1.2 mrad,a 87.2％ decrease in the maximum lateral force between the wheel and rail from 14.1 kN to 1.8 kN and a 87.2％ decrease in the lateral displacement between the wheel and rail from 12.2 mm to 8.5 mm.The derailment coefficient fluctuates also around zero.The vehicle's curve passing ability and operational safety are improved.The active radial bogie changes the wear position of the wheel and rail,from the wear on the wheel flange and rail side to the wear on the wheel tread and steel rail head top surface,slowing down the wear on the wheel flange and rail side,prolonging the wheel turning cycle,and increasing the service life.Using the JENDEL wear model for simulation analysis,it is found that compared with conventional bogies,active radial bogies have significantly reduced wheel rail wear.The wear of the outer wheel and track of the active wheelset decreases by 74.5％ and 75.9％,while the wear of the inner wheel and track decreases by 61.6％ and 61％.The wear of the outer wheel and track of the driven wheel decreases by 39.2％ and 43.7％,while the wear of the inner wheel and track decreases by 41.5％ and 44.3％ respectively.The research results can provide a basis for the effectiveness of active radial control.
万方数据
维普
