In this paper, a multibody dynamic model of a railway vehicle that assumes that vertical and lateral dynamics are weakly coupled, has been experimentally validated using an instrumented scaled vehicle running on a 5-inch-wide experimental track. The proposed linearised model treats the vertical and lateral dynamics of the multibody system almost independently, being coupled exclusively by the suspension forces. Several experiments have been carried out at the scaled railroad facilities at the University of Seville in order to test and validate the simulation model under different working conditions. The scaled vehicle used in the experiments is a bogie instrumented with various sensors that register the accelerations and angular velocities of the vehicle, its forward velocity, its position along the track, and the wheel–rail contact forces in the front wheelset. The obtained results demonstrate how the proposed computational model correctly reproduces the dynamics of the real mechanical system in an efficient computational manner.

中文翻译：

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横向和垂直动力学耦合弱的多体模型在有轨电车上的应用和实验验证。

在本文中，使用在5英寸宽的实验轨道上运行的仪表化比例车辆，通过实验验证了假设垂直和横向动力学弱耦合的铁路车辆的多体动力学模型。提出的线性化模型几乎独立地处理多体系统的垂直和横向动力学，仅通过悬架力进行耦合。为了测试和验证在不同工作条件下的仿真模型，已经在塞维利亚大学的大型铁路设施上进行了一些实验。实验中使用的比例车是一辆装有各种传感器的转向架，可记录车辆的加速度和角速度，前进速度，沿轨道的位置，前轮对中的轮轨接触力。获得的结果证明了所提出的计算模型如何以有效的计算方式正确地再现真实机械系统的动力学。