Abstract
To explore the impact of wheel-rail excitation on the dynamic performance of axle box bearings, a dynamic model of the high-speed train including axle box bearings is developed. Subsequently, the dynamic response characteristics of the axle box bearing are examined. The investigation focuses on the acceleration characteristics of bearing vibration under excitation of track irregularities and wheel flats. In addition, experiments on both normal and faulty bearings are conducted separately, and the correctness of the model and some conclusions are verified. According to the research, track irregularity is unfavorable for bearing fault detection based on resonance demodulation. Under the same speed conditions, the acceleration peak of bearing is inversely proportional to the length of the wheel flat and directly proportional to its depth. The paper will contribute to a deeper understanding of the dynamic performance of axle box bearings.
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The present work is supported by the National Scholarship Council of China.
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Project supported by the National Natural Science Foundation of China (Nos. 12393780, 12032017, and 12002221), the Key Scientific Research Projects of China Railway Group (No. N2021J032), the College Education Scientific Research Project in Hebei Province of China (No. JZX2024006), the S&T Program in Hebei of China (No. 21567622H), and the Research Project of Hebei Province Science and Technology (No. QN2023071)
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Ma, Q., Yang, S., Liu, Y. et al. Dynamic analysis of axle box bearings on the high-speed train caused by wheel-rail excitation. Appl. Math. Mech.-Engl. Ed. 45, 441–460 (2024). https://doi.org/10.1007/s10483-024-3097-7
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DOI: https://doi.org/10.1007/s10483-024-3097-7