ABSTRACT

The location of wagon gravity centre (WGC) has a significant effect on the wheel-rail contact force. For the sake of improving the curving performance of a freight wagon, it is necessary to optimise the location of WGC by shifting the position of cargo or adopting the balance weight. This paper proposes a data analysis methodology that demonstrates the safe distribution scope of WGC based on the results of dynamics simulations. A general model of the loaded wagon is built using the multibody dynamics software VI-Rail. The simulation conditions are designed to achieve the analog of vehicle running circumstances in reality. The simulation results under various conditions provide us full evidence to demarcate the safe locations of WGC and derive the Pareto-optimal solutions. The methodology presented in the paper can be applied to an arbitrary case of railway freight transportation to promote the vehicle running safety.

摘要

货车重心（WGC）的位置对轮轨接触力有显着影响。为了提高货车的弯曲性能，需要通过移动货物位置或采用平衡重来优化WGC的位置。本文提出了一种基于动力学模拟结果证明WGC安全分布范围的数据分析方法。使用多体动力学软件 VI-Rail 建立了装载货车的一般模型。模拟条件旨在实现对现实车辆运行情况的模拟。各种条件下的模拟结果为我们划定WGC的安全位置和推导帕累托最优解提供了充分的证据。