Dynamic Performance Analysis of 400 km/h EMU under Different Line Boundary Conditions
In order to explore the dynamic performance of the 400 km/h high-speed train,based on the track irregularity of Beijing-Shanghai railway,the dynamic calculation performance of the new wheel,the worn wheel and the working conditions matching the 60N and 60D rail profiles,as well as the different curves and super elevation working conditions are compared and calculated.When LMB_10 tread is used for high-speed EMUs,both the vehicle's motion stability and running stability indexes can meet the relevant standards with enough safety margin.The dynamic performance of the new wheel-rail matching is better than that of the worn wheel,which indicates that the new wheel state is conducive to vehicle passing and it is recommended to use the new wheel to match the wheel-rail relationship.The data of the matching between the wear tread and the rail profile of CN 60N and Rail_60 basically coincide,indicating that type of the rail profile when matching has little effect on the running stability.Under the wheel-rail matching relationship under the combination of LMB 10_new and CN 60N,all the stability indexes through various curves and under ultra-high conditions are within the limit,which meets the standard requirements and has sufficient safety margin.Under the wheel-rail matching relationship under the combination of LMB 10_new and CN 60N,the stability indexes of Chengdu-Chongqing railway are higher than those of Zhengzhou-Xi'an railway and Beijing-Shanghai railway.
万方数据
