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Experimental validation of a fast wheel wear prediction model
Wear ( IF 5 ) Pub Date : 2021-09-07 , DOI: 10.1016/j.wear.2021.204090
I.S. Apezetxea 1, 2 , X. Perez 3 , A. Alonso 2, 4
Affiliation  

Wheel-rail wear prediction is a fundamental matter in order to study problems such as wheel lifespan prediction and evolution of vehicle dynamic characteristics with time. However, one of the principal drawbacks of the existing methodologies for calculating the wear evolution is the computational cost. The developed methodology is based on (1) representing the whole route in a reduced number of characteristic points and (2) substituting dynamic simulations by quasi-static ones, in order to reduce computational cost significantly. This paper presents its integration into the complete simulation process for predicting wheel wear evolution and its validation by comparing simulated results with in-service wheel profile measurements. The generality of the method has been verified by applying it to two different operational cases with very different track characteristics. For the validation, the evolution of the worn depth in the tread has been compared according to the travelled distance, as well as the morphology of the worn depth (worn area). Promising results have been obtained in the prediction of wheel wear evolution: in both cases, the simulated curve approaches the measurement curve satisfactorily. Therefore, it can be concluded the validation of the developed method adequately.



中文翻译:

快速车轮磨损预测模型的实验验证

轮轨磨损预测是研究车轮寿命预测和车辆动态特性随时间演变等问题的基础。然而,用于计算磨损演变的现有方法的主要缺点之一是计算成本。所开发的方法基于(1)以减少的特征点数量表示整条路线和(2)用准静态模拟代替动态模拟,以显着降低计算成本。本文通过将模拟结果与使用中的车轮轮廓测量值进行比较,介绍了它与用于预测车轮磨损演变的完整模拟过程的集成及其验证。该方法的通用性已通过将其应用于具有非常不同的轨道特性的两个不同的操作案例而得到验证。为了验证,根据行驶距离以及磨损深度(磨损区域)的形态,比较了胎面磨损深度的演变。在车轮磨损演变的预测中获得了有希望的结果:在两种情况下,模拟曲线都令人满意地接近测量曲线。因此,可以得出充分验证所开发方法的结论。模拟曲线令人满意地接近测量曲线。因此,可以得出充分验证所开发方法的结论。模拟曲线令人满意地接近测量曲线。因此,可以得出充分验证所开发方法的结论。

更新日期:2021-09-16
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