SPP 1015: Systemdynamik und Langzeitverhalten von Fahrwerk, Gleis und Untergrund

SPP 1015：系统动力学和底盘、履带和地基的长期行为

• 批准号: 5467286
• 金额: --
• 依托单位: Institut für Luft- und Raumfahrt (ILR)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 1996
• 资助国家: 德国
• 起止时间: 1995-12-31 至 2001-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5467286?language=en
• 关键词: SPP; 1015; Systemdynamik; und; Langzeitverhalten

The priority programme "System Dynamics and Long-term Behaviour of Vehicle, Track and Subgrade" contributes to a better understanding of the dynamic interaction of vehicle and track and the long-term behaviour of the components of the entire system. Recently encountered railway-related problems may be solved as a result of this research. So far, the approach has been to increase speed, traction and axle-load by optimising sub-systems. However, the entire system has revealed new limitations: settlement and destruction of the ballast and the subgrade lead to deterioration of the track; irregular wear of the wheels cause an increase in overall load and deterioration of passengers' comfort; damage of the running surfaces of the rail and the wheel becomes more frequent. The research is based on four main issues. Non-linear behaviour of the ballast is investigated experimentally in laboratories and simulated by new material-laws and multi-particle computer models. The coupling of the track model and the subgrade is defined using various methods. Phenomena occurring in the contact area of wheel and rail are numerically and experimentally analysed, also by using a 'virtual' measurement device on the moving train. Dynamic models of the entire system are thought to explain the phenomenon of polygonalisation of the wheels. It is expected that the interdisciplinary and fundamental research will result in physical explanations and subsequently will lead to technical developments which will guarantee long-lasting solutions.

优先方案“车辆、轨道和路基的系统动态和长期行为”有助于更好地了解车辆和轨道的动态相互作用以及整个系统各部件的长期行为。最近遇到的铁路相关的问题可能会得到解决，作为这项研究的结果。到目前为止，该方法一直是通过优化子系统来提高速度，牵引力和轴载。然而，整个系统暴露出新的局限性：道碴和路基的沉降和破坏导致轨道的恶化;车轮的不规则磨损导致总负荷增加和乘客舒适度下降;轨道和车轮运行表面的损坏变得更加频繁。研究基于四个主要问题。压载物的非线性行为在实验室中进行了实验研究，并通过新的材料定律和多粒子计算机模型进行了模拟。轨道模型和路基的耦合使用各种方法来定义。对轮轨接触区发生的现象进行了数值分析和实验研究，并在列车运行中使用了“虚拟”测量装置。整个系统的动力学模型被认为是解释的现象，车轮的parallisation。预计跨学科和基础研究将导致物理解释，随后将导致技术发展，这将保证持久的解决方案。