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A case study of wear-type rail corrugation prediction and control using speed variation

机译:基于速度变化的磨损型铁路瓦楞纸箱预测与控制的案例研究

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摘要

The transportation noise phenomenon known as wear-type rail corrugation is a significant problem in railway engineering, that manifests as an undesirable periodic wear pattern on the contact surface of rails. Rail corrugations induce unwanted vibrations, noise and damage to vehicle and track systems. 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 train pass speeds over a site 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 both efficient analytical and more complex numerical corrugation growth models. In doing so, previously developed analytical predictions for growth rate under varying speed conditions are generalised to both tangent track and cornering conditions. Validation and comparison with more complex benchmarked numerical models and field measurements is therefore achieved. 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, compared and discussed. Possible undesirable side-effects of implementing such a corrugation control strategy are also investigated.
机译:在铁路工程中,称为磨损型轨道波纹的运输噪声现象是一个重大问题,表现为在轨道接触表面上出现不希望的周期性磨损。轨道波纹会引起不必要的振动,噪音并损坏车辆和轨道系统。目前,瓦楞纸唯一可靠的解决方案是通过磨削去除铁路运营商,这是一笔不小的费用。当前作者的最新研究从理论上表明,站点上火车通过速度的均匀性会提高波纹的增长率,而扩大概率通过速度的分布可能是减轻波纹增长的一种可能方法。为了进一步测试这些结果并量化预期的性能,在本文中,使用来自具有重复波纹的站点的现场测量数据来调整和验证有效的分析和更复杂的数值波纹增长模型。这样做时,以前开发的在变速条件下的增长率的分析预测被推广到切线和转弯条件。因此,可以进行更复杂的基准数字模型和现场测量的验证和比较。然后研究改变现场测得的通过速度分布的影响,并提出,比较和讨论了量化预期的瓦楞纸增长率下降的结果。还研究了实施这种波纹控制策略的可能的不良副作用。

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