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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers, Part C. Journal of mechanical engineering science >Impact of maintenance conditions of vehicle components on the vehicle-track interaction loads
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Impact of maintenance conditions of vehicle components on the vehicle-track interaction loads

机译:车辆部件维护条件对车辆轨道交互负荷的影响

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摘要

To improve the efficiency and competitiveness of railway transport, passenger and freight trains should travel faster and have increased payload, without losing the necessary levels of running safety and ride comfort, as well as assuring low aggressiveness on track and minimising the life cycle costs. Hence, the manufacturer's challenge consists of improving the dynamic performance of the railway vehicles and reducing the loads on the track as well as on the rolling stock components. These objectives can be achieved through optimizing the design of the vehicle, while taking into consideration that the characteristics of the vehicle and of the track may change over time and space, and that they depend on the maintenance conditions of the vehicle and of the infrastructure. This work proposes a computational methodology to study how the varying vehicle component characteristics, on normal and degraded conditions, impact on the vehicle/track interaction loads and on the track damage. The purpose of this study is to trace a path towards a realistic definition of a load mission profile for the structural fatigue dimensioning of the vehicle components. The assessment criteria and the evaluated quantities are defined according to the EN14363 regulation.
机译:为了提高铁路运输的效率和竞争力,乘客和货车应该更快地行进,有效载荷增加,而不会失去必要的运行安全和乘坐舒适度,并确保低攻击性,并尽量减少生命周期成本。因此,制造商的挑战包括提高铁路车辆的动态性能并减少轨道上的负载以及滚动储量组件。通过优化车辆的设计,可以通过优化车辆的设计来实现这些目标,同时考虑到车辆和轨道的特性可以随时间和空间而改变,并且它们依赖于车辆的维护条件和基础设施的维护条件。这项工作提出了一种计算方法来研究不同车辆部件特性如何在正常和降级的条件下,对车辆/轨道相互作用负载和轨道损坏的影响。本研究的目的是追踪用于车辆部件的结构疲劳尺寸的负载任务轮廓的现实定义的路径。评估标准和评估的数量根据EN14363规定定义。

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