- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | DU Xing, TAO Gongquan, YANG Cheng, WEN Zefeng, JIN Xuesong, WU Jun. Influence of Different Rail Cants on Dynamical Characteristics of High-Speed Railway Vehicles[J]. Journal of Southwest Jiaotong University, 2022, 57(2): 286-294. doi: 10.3969/j.issn.0258-2724.20210068
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In the process of fine adjustment, maintenance and repair to tracks, it is frequent to adjust only the height, direction, level, distortion and other relevant factors, but there are few relevant regulations on rail cants. It is found that the measured rail cants on a section of a passenger dedicated line vary greatly. By establishing a model of a 250 km/h EMU vehicle, given that the LMD wheel profile matches the standard 60 kg/m (CHN60) rail, the vehicle dynamic behavior is analyzed in the condition of the same track with standard (1∶40), symmetrically changing, and asymmetrically changing rail cants. The calculation results show that the symmetrical and asymmetric changes of the rail cant have a great impact on the stability and comfort of the vehicle when it runs in a straight line. Compared with the standard rail cant (1∶40), the symmetrically and asymmetrically changing rail cants increase vertical stability index by 32.96% and 34.52%, respectively, and the maximum lateral stability index by 40.65%. Wheel wear increases gradually with the sequence of the standard, symmetrical changing, and asymmetric changing rail cants. Compared with the standard rail cant, the asymmetrically and symmetrically changing rail cants on the straight section increases the maximum wear index by 136.71% and 27.65% respectively, and the maximum surface fatigue index by 25.14% and 15.86% respectively. For the symmetrically and asymmetrically changing rail cants, the vehicle lateral shaking is increased. In contrast to the standard rail cant, wheel wear and fatigue index on the curved section are less affected by the variation of rail cants, but they are more influenced on the curved section than those on the straight section. Finally, according to the above conclusions, the practical suggestions for rail cants are put forward.
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