TBDS轮轨耦合模型的仿真验证及其应用

SIMULATION AND VERIFICATION OF TBDS WHEEL/RAIL INTERACTION MODEL AND ITS APPLICATION

为全面研究轮轨系统垂向动力作用，开发了较复杂的铁木辛科梁单元的非线性轮轨垂向动态耦合模型与仿真软件。用之仿真国外著名的轨道试验，取得较原来更为逼真的结果，并在更深的层次上阐述了过程的物理意义。此外，还据此研究了低动力三大件转向架的可行途径。这一模型将为我国高速或重载轮轨相互作用研究、低动力转向架的开发以及轨道结构及参数的合理选择提供适用工具。

In order to study the vertical dynamic interaction of wheel/rail under heavy load or high speed,a complex non-linear vehicle-track model containing finite elements of Timoshenko-beam is used to simulate two famous vehicle-track dynamic test.The study shows an understanding of interaction of vehicle-track. The model can be employed to investigate the dynamic effect between vehicle and track at high speed or on heavy loads.The model has been applied also in the study of the three-piece truck with low dynamic effect.Furthermore,it is available for reasonable selection of the track structure and parameters.