复杂运行条件下高速列车轮对系统的温度特性分析

IF 3.4 Q1 ENGINEERING, MECHANICAL 国际机械系统动力学学报(英文) Pub Date : 2024-08-06 DOI:10.1002/msd2.12122
Baosen Wang, Yongqiang Liu, Yingying Liao, Yixuan Wang
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引用次数: 0

摘要

随着高速列车技术的飞速发展,确保列车运行安全变得至关重要。轴承作为列车转向架的关键部件,在维护安全标准方面的作用备受关注。监测轴承温度以评估其运动状态是高速列车的常见做法,这就强调了进一步研究温度波动的必要性。本研究建立了高速列车轴承转子系统的动态模型。通过考虑滚道和滚动体之间的接触点,得到了轴承的功率损耗,并建立了系统的瞬态温度场模型。模型说明了节点温度与环境温度、列车运行速度和负载等因素之间的关系,并详细介绍了轴承故障类型和尺寸对节点温度的影响。分析结果表明,节点温度随这些可量化因素对应的数值增大而升高,受滚动体故障的影响最大。此外,还观察到温度在初始阶段快速上升,随着时间的推移逐渐趋于平稳。不同故障条件下的温度对比分析表明,节点温度受滚动体故障的影响最大。实验和实际线路温度数据用于验证模型的有效性。对比结果表明,模拟结果与实验数据和线路数据十分吻合。高速列车轴承转子系统的瞬态温度场模型能有效模拟和预测系统各节点的温度变化过程。仿真结果对进一步研究和实际应用保障列车运行安全具有一定的理论指导意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Analysis of temperature characteristics of high-speed train wheelset system under complex operating conditions

With the rapid advancements in high-speed train technology, the importance of ensuring the safety of train operations has become paramount. Bearings, being a critical component of train bogies, have garnered significant attention for their role in maintaining safety standards. Monitoring the temperature of bearings to evaluate their motion state is a common practice in high-speed trains, emphasizing the need for further research into temperature fluctuations. In this study, a dynamic model is developed for the bearing rotor system of high-speed trains. By considering the contact points between raceways and rolling elements, the power loss in the bearing is obtained and a transient temperature-field model of the system is established. The relationship between node temperature and factors such as ambient temperature, train running speed, and load is illustrated, with a detailed presentation of the influence of bearing fault type and size on node temperature. The analysis results reveal that the node temperature increases with higher values corresponding to those quantifiable factors and is most affected by rolling element fault. Additionally, it is observed that the temperature rises rapidly in the initial stage and gradually flattens out over time. The comparative analysis of temperature under different fault conditions shows that the node temperature is most affected by the rolling element fault. Experiments and actual line temperature data are used to verify the validity of the model. The comparison results show that the simulation aligns well with experimental and line data. The transient temperature-field model of the bearing rotor system in high-speed trains can effectively simulate and predict the temperature change process of each node of the system. The simulation results hold certain theoretical guiding significance for further research and practical applications in ensuring train operation safety.

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