Investigation of the fundamental knowledge to railway grinding by ways analyzing grinding tools and processes in correlation with operational behavior of track

通过分析与轨道运行行为相关的磨削工具和工艺，研究铁路磨削的基础知识

基本信息

批准号：
295440341
负责人：
Professor Dr.-Ing. Eckart Uhlmann
金额：
--
依托单位：
Fachgebiet Werkzeugmaschinen und Fertigungstechnik
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2017
资助国家：
德国
起止时间：
2016-12-31 至 2018-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/295440341?language=en
关键词：
Investigation fundamental knowledge railway grinding

项目摘要

By way of rail grinding, defective material layers can be removed from track surfaces and the required dimension and size accuracies can be achieved. Currently, despite wide industrial implementation, there is a lack of technological knowledge concerning the interactions between grinding tools, process parameters and results, as well as their influence on the tribological properties and further operational behavior of the track. Hence fundamental knowledge about rail grinding has to be generated and the interactions between this repair technology and the expectable operational behavior and life time of the track have to be qualified. For the scientific analysis of rail grinding cooperation between the IWF and the MMI is intended, since broad competences in the two fields, manufacturing technology (IWF) and friction mechanics, (MMI) are needed. The international cooperation is further motivated by the current high demand for interoperable infrastructure solutions in railway maintenance. The project approach as well as preliminary work was carried out within the activities for preparation of the international cooperation, being funded by DFG (UH 100/173-1).The research project divides into two funding periods with the duration of each two years. Within the first funding period the influence of the grinding process and environmental conditions at generated track sub-surface and life time has to be qualified, which will be carried out by ways of grinding and tribological tests. Furthermore, models of rail grinding and the tribological behavior of rail will be developed. The rail grinding model particularly regards the heat development during the process with the influence on the sub-surface structure of rail. The model of the tribological behavior of rail will characterize a time-discrete material fatigue for different friction scenarios of wheel/rail contact. During the second funding period the scientific knowledge concerning rail grinding has to be systematically enlarged. The influence of the grinding tool and bogie specification on the results of rail grinding and the operational behavior of rail will be analyzed. The influencing factors on the rail/wheel system will be widely classified and their influence on the results of grinding as well as on the operational life time of rail will be qualified. Finally, the newly generated knowledge will be implemented into the models of the rail grinding and the tribological behavior of rail. Project documentation and model verification will also be carried out.

通过铁轨研磨，可以从轨道表面上去除材料层，并可以实现所需的尺寸和尺寸精度。目前，尽管实施了广泛的工业实施，但缺乏关于磨削工具，过程参数和结果之间的相互作用的技术知识，以及它们对摩擦学特性的影响和轨道的进一步操作行为。因此，必须产生有关铁路研磨的基本知识，并且必须有资格获得这种维修技术与可预期的操作行为和寿命之间的相互作用。为了对IWF和MMI之间的铁路研磨合作进行科学分析，因为需要两个领域的广泛能力，制造技术（IWF）和摩擦力学（MMI）。当前对铁路维护中对可互操作基础设施解决方案的高需求进一步激发了国际合作。在准备国际合作的活动中进行了项目方法以及初步工作，由DFG资助（UH 100/173-1）。研究项目分为两个资金期，每两年的持续时间。在第一个融资期内，必须将磨削过程和环境条件在产生的轨道地下和寿命时的影响符合条件，这将通过磨削和摩擦学测试的方式进行。此外，将开发铁轨研磨模型和铁轨的摩擦学行为。铁轨研磨模型特别认为在此过程中的热量发展对铁轨的地下结构的影响。铁轨摩擦学行为的模型将表征针对车轮/导轨接触的不同摩擦场景的时间污点材料疲劳。在第二个资助期间，必须系统地扩大有关铁路研磨的科学知识。将分析研磨工具和转向架规范对铁路研磨结果和铁路运营行为的影响。轨道/轮毂系统的影响因素将被广泛分类，它们对磨削结果以及铁路运营寿命的影响将是合格的。最后，新生成的知识将被实施到铁路研磨的模型和铁路的摩擦学行为中。项目文档和模型验证也将进行。