Transient adhesion effects in rolling–sliding contacts influence all aspects of train–track interaction. This is of high importance specifically when these effects result in critically low adhesion, which poses a risk to traction and braking of railway vehicles. This study presents a model that can replicate the transient changes of the coefficient of adhesion with tested water and solid particle mix. The experimental data for the model are measured using a commercial ball-on-disc tribometer. The experimental results showed a liquid reservoir in front of the contact area that slowly reduces in size. This observation was used in the modelling approach to divide the calculation into two stages where the reservoir is present and when it disappears. The model was able to reproduce the occurrence of low adhesion region seen in experimental results with different particle concentrations.

滚动滑动接触中的瞬态粘附效应会影响列车与轨道相互作用的各个方面。特别是当这些影响导致附着力极低，从而对铁路车辆的牵引和制动构成风险时，这一点非常重要。这项研究提出了一个模型，可以复制测试水和固体颗粒混合物的粘附系数的瞬态变化。该模型的实验数据是使用商用球盘摩擦计测量的。实验结果显示，接触区域前面有一个储液池，其尺寸缓慢减小。这一观察结果被用于建模方法，将计算分为两个阶段：储层存在和消失。该模型能够重现不同颗粒浓度的实验结果中出现的低粘附区域。