|
|
 长大编组列车纵向动力学仿真分析UM Train模块是一个专业的列车纵向动力学建模和仿真模块，特别适用于重载线路长大编组列车的纵向冲动仿真研究，可模拟牵引、制动和缓解等工况。
纵向动力学模型中的机车和车辆一般为单自由度或少数几个自由度模型，不考虑轮轨接触作用，代之以基本阻力、坡道阻力、曲线阻力等，考虑机车牵引、空气制动和车钩缓冲器的非线性特性。通过仿真计算可以输出制动力、车钩力、车辆位置、速度和加速度等。 建模特点在UM Train模块中，每节机车或车辆都是一个子系统，用户只需提前准备好参数化的模板模型，就能很便捷地创建列车模型。
出版文献
R. Kovalev, A. Sakalo, V. Yazykov, A. Shamdani, R. Bowey & C. Wakeling Full paper (Free full access for first 50 downloads) A heavy haul train and car dumper model was created to analyse train longitudinal dynamics during dumping. Influence of such factors as performance curve of draft gears, total free slack in couplers, operating mode of train positioner and braking of last two cars of train on the in-train forces was considered.
Dmitry Pogorelov, Vladislav Yazykov, Nikolay Lysikov, Ercan Oztemel, Omer Faruk Arar & Ferhat Sukru Rende Full paper (Free full access for first 50 downloads) Algorithms for simulation of trains as coupled detailed spatial and simplified one-dimensional models of rail vehicles are considered. Such an approach to train dynamics allows evaluation of in-train forces and their influence on dynamic characteristics related, e.g. to the safety problems or ride comfort. Initially, the method has been developed for the analysis of derailment accidents and further it has been implemented as a mechanical solver in six-degrees-of-freedom train simulator TRENSIM, which features are discussed in the paper. An algorithm for parallelisation on multi-core processors for the simulation of rail vehicles and trains is presented. Maksym Spiryagin, Qing Wu & Colin Cole Full paper (Free full access for first 50 downloads) Longitudinal train dynamics (LTD) simulations have been playing an instrumental role in the development of larger trains, especially freight trains. LTD simulators have been reported from all around the world, but without standards or standard questions to assess the correct implementation of LTD analysis and the state of LTD studies. Under this situation, the Centre for Railway Engineering initiated the International Benchmarking of Longitudinal Train Dynamics Simulators. Eight teams involving 10 institutions from five countries across three continents have participated in the benchmark and submitted their results. This paper describes the benchmarking questions so other researchers will be able to repeat the simulations in the future and benchmark their programs against the current participating software. The question information includes train configurations and characteristics of the wagon connection system, locomotive traction and dynamic brake characteristics, resistance formula, track data, train driving controls and output requirements. The question information will also enable researchers to replicate the benchmark by providing relevant formulas, data sheets, figures and descriptions. |
