The Effect of Profiles on Wheel and Rail Damage
The Effect of Profiles on Wheel and Rail Damage
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DOI：
10.4273/ijvss.1.4.07
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发表时间：
2009-11
影响因子：
--
通讯作者：
S. Iwnicki
中科院分区：
文献类型：
--
作者：
S. Iwnicki
本文概述了目前用于铁路车辆的轮轨型材的历史发展。它还介绍了轮轨接触中涉及的关键损伤机制，并总结了铁路工程师最近开发的根据这些机制预测轮轨损伤程度的方法。解释了预测磨损和滚动接触疲劳(RCF)的关键损伤模式的工具。讨论了优化车轮和钢轨外形以减少整体损伤从而提高铁路系统效率的方法，并给出了一个来自英国的“反RCF”车轮外形的案例研究。最后讨论了一种利用遗传算法优化车轮外形的新方法，该方法使用惩罚指标来优化车轮外形，使其具有良好的行驶性能、较低的轨道力和钢轨应力、较低的磨损量和较低的RCF。
This paper outlines the historical development of the wheel and rail profiles currently used on railway vehicles. It also presents the key damage mechanisms involved in wheel-rail contact and summarises the methods that have recently been developed by railway engineers to predict the level of wheel and rail damage from these mechanisms. Tools for predicting the key damage modes of wear and rolling contact fatigue (RCF) are explained. Methods of optimising the wheel and rail profiles to reduce the overall damage and therefore improve the efficiency of the railway system are discussed and a case study from the UK of an ‘anti-RCF’ wheel profile is presented. Finally a novel method using a genetic algorithm is discussed which uses a penalty index to optimise the wheel profile for good running, low track forces and rail stress, low wear and RCF.