基于温度依赖摩擦系数的钢轨接触温度建模

2020 IEEE 5th International Conference on Intelligent Transportation Engineering (ICITE) Pub Date : 2020-09-01 DOI:10.1109/ICITE50838.2020.9231326

Mengling Wu, Zewang Yuan, Chun Tian, Maolin Chen

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引用次数: 2

摘要

摩擦模型的合理性影响钢轨温度计算的准确性。采用温度相关摩擦系数(COF)建立了钢轨温度的三维有限元模型。比较了温度相关模型和恒定COF模型的计算结果。温度相关COF滑移率为-50%时的峰值温度为524.73℃，而恒定COF滑移率为727.88℃。随温度变化的COF模型中温度呈线性上升，而恒定COF模型中温度逐渐缓慢上升，达到峰值。恒定COF模型的温度梯度大于温度相关COF模型的温度梯度。

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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Modeling Rail Contact Temperature with a Temperature-dependent Coefficient of Friction

The rationality of friction model affects the accuracy of rail temperature calculation. A temperature-dependent coefficient of friction (COF) was adopted to develop a 3-D FE model for calculating the rail temperature. A comparison of the results between the models using the temperature-dependent and constant COF was conducted. The peak temperature is 524.73 °C at the slippage of -50% from the temperature-dependent COF, while that is 727.88°C from the constant COF. The temperature rises linearly in the model with the temperature-dependent COF, while the temperature goes up slowly gradually before reaching the peak in the model with the constant COF. The temperature gradient in the model with the constant COF are larger than that with the temperature-dependent COF.

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2020 IEEE 5th International Conference on Intelligent Transportation Engineering (ICITE)

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