- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
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| Citation: | DONG Yahong, CAO Shuqian. Analysis of Generation and Evolution Characteristics of Wheel High-Order Polygonal Wear[J]. Journal of Southwest Jiaotong University, 2023, 58(3): 665-676. doi: 10.3969/j.issn.0258-2724.20210989
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Aiming at the increasingly serious problem of high-order wheel polygonal wear, based on the wheel-rail system rotor dynamics model, wheel-rail contact model and wear depth model, the generation and evolution model of wheel polygonal wear is established. By analyzing the variation of speed and wheel mass eccentricity, the regularity of generation and evolution of wheel polygonal wear are revealed, and the field tracking data are verified. The influence of system parameters on polygonal wear is studied by modal analysis and sensitivity analysis. The results show that the generation and evolution of high order wheel polygonal wear follows the law of “fixed frequency and divisible”. When the fixed frequency of 580 Hz divides wheelset rotation frequency, the wheel wear will evolve into 19th order polygonal, otherwise it will tend to be uniform. This fixed frequency is mainly derived from the 2nd-order bending mode of the wheelset and has the greatest sensitivity to the axle diameter. The fixed frequency of the wheel can be changed by running at constant rotating speed and increasing the axle diameter, which can effectively suppress the polygonal wear of the wheel.
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