An accurate and high-efficiency contact model is essential for vehicle-track dynamic simulation and wear prediction. The paper attempts to assess the influence of different contact models on the offline and online simulation, as well as wear depth distribution. Taking CONTACT as the reference model, the computational accuracies of contact model combinations (i.e. Hertz + FASTSIM, Kik–Piotrowski (KP) + FASTSIM, modified Kik–Piotrowski (MKP) + FASTSIM and MKP + FaStrip) are evaluated. Typical wheel-rail contact cases and two dynamic simulation cases (track irregularity and curve track) have been studied. Results show that MKP + FaStrip achieves the best computational accuracy in calculating the typical wheel-rail contact situation, besides, the yaw angle has a significant influence on the contact patch shape and pressure distribution, especially when the wheel flange contacts with a rail corner. With regard to the vehicle passing the track with the lateral irregularity, both KP + FASTSIM and MKP + FaStrip models can achieve relatively good agreement on dynamic results and wear prediction with CONTACT. In terms of the curve track, MKP + FaStrip has better accuracy on dynamic results and wear due to a larger yaw angle.

准确高效的接触模型对于车辆轨道动态模拟和磨损预测至关重要。本文试图评估不同接触模型对离线和在线仿真的影响，以及磨损深度分布。以CONTACT为参考模型，评估了接触模型组合（即Hertz + FASTSIM、Kik-Piotrowski (KP) + FASTSIM、改进的Kik-Piotrowski (MKP) + FASTSIM和MKP + FaStrip）的计算精度。研究了典型的轮轨接触案例和两种动态仿真案例（轨道不规则性和曲线轨道）。结果表明，MKP+FaStrip在计算典型轮轨接触情况时的计算精度最好，而且偏航角对接触面形状和压力分布有显着影响，特别是当轮缘与钢轨拐角接触时。对于通过横向不规则赛道的车辆，KP + FASTSIM 和 MKP + FaStrip 模型在动态结果和磨损预测上都可以与 CONTACT 取得较好的一致性。在曲线轨迹方面，MKP+FaStrip由于偏航角较大，在动态结果和磨损上具有更好的精度。