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A CASE STUDY ON THE EFFECT OF SPEED VARIATION ON THE GROWTH OF WEAR-TYPE RAIL CORRUGATION

机译:速度变化对磨损型轨道波纹生长影响的案例研究

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The transportation noise phenomenon known as wear-type rail corrugation is a significant problem in railway engineering, which manifests as an undesirable periodic wear pattern on the contact surfaces of the rail. This variation from a flat profile induces unwanted vibrations, noise and other associated problems. Currently the only reliable solution to corrugation is removal by grinding at significant expense to the railway operator. Recent research by the current authors has theoretically shown that uniformity in pass speed enhances corrugation growth rate and that broadening the probabilistic pass speed distribution may be a possible method of mitigating corrugation growth. To further test these results and to quantify the expected performance, in this paper, field measured data from a site with recurrent corrugation is used to tune and validate a theoretical model that predicts the growth rate of the phenomenon. The effect of changing the field measured pass speed distribution is then investigated and results quantifying the expected reduction in corrugation growth rate are presented and discussed.
机译:称为磨损型轨道波纹的运输噪声现象是铁路工程中的一个重要问题,它在轨道的接触表面上表现为不期望的周期性磨损图案。来自平面轮廓的这种变化会诱导不需要的振动,噪声和其他相关问题。目前,唯一可靠的波纹解决方案是通过对铁路运营商的大量牺牲进行磨削而拆除。目前作者最近的研究理论上表明,通过速度的均匀性提高了波纹生长速率,并且扩大概率通过速度分布可能是减轻波纹生长的可能方法。为了进一步测试这些结果并量化预期的性能,本文从具有复发波纹的网站测量数据来调整和验证预测现象的生长速率的理论模型。然后研究了改变现场测量的通速分布的效果,并讨论并讨论了量化瓦楞生长速率的预期降低。

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