- 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: | YAO Yuan, REN Chengming, CHEN Xiangwang, LIU Xiaoxue. Suspension Parameters Optimum Matching of High-Speed Locomotive Based on Frequency Domain Stationarity[J]. Journal of Southwest Jiaotong University, 2022, 57(6): 1259-1267. doi: 10.3969/j.issn.0258-2724.20200753
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In order to reasonably optimize and match the suspension parameters to improve the dynamic performance of high-speed locomotives, the pseudo-excitation method was used to calculate the lateral riding quality index in the frequency domain for a high-speed locomotive, and a collaborative multi-parameter optimization method for the key suspension parameters was proposed considering the multi-objective performance of lateral riding quality in the frequency domain and lateral stability. Taking the operational scenarios as examples in which two yaw damper layouts and three wheel-rail contact conditions were considered, the improvement effect of this method on the lateral dynamic performance of the locomotive was illustrated. The results show that the primary hunting stability of the locomotive is poor in the low equivalent conicity condition. The lateral riding quality of the rear cab is significantly deteriorated, especially when the skewed symmetrical arrangement of the yaw damper is adopted. For the case of low equivalent conicity, it's necessary to regard improving locomotive lateral stability as the optimization objective, while for the case of high equivalent conicity, more attention should be paid to lateral riding quality. In order to give consideration to the dynamic performance of the locomotive under different wheel-rail contact states, thus improving the adaptability to track lines, the values of primary longitudinal stiffness, yaw damper damping and secondary lateral damping should be designed as small as possible in the given optimization range, it is recommended to choose them as 12 kN/mm, 600 kN·s/m, and 25 kN·s/m, respectively.
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