期刊
WEAR
卷 530, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.wear.2023.205053
关键词
High-speed; Wheel-rail rolling contact; Low adhesion; Vibrations; Irregular wear; Explicit FE method
A time-domain finite element model was developed to investigate the transient rolling contact of a driving wheelset over a curved track with Low Adhesion Zones (LAZs) shorter than 1.0 m. Structural vibrations of the wheelset were analyzed to explain the transient contact forces, creepages, and resulting irregular wear. LAZs on the high rails were found to be more detrimental than those on the low rails. The results shed light on the occurrence of flats and rolling contact fatigue in adverse weather conditions, even without significant wheel idling.
A time-domain finite element model is developed to study the transient rolling contact of a driving wheelset over a curved track with Low Adhesion Zones (LAZs) shorter than 1.0 m. LAZs on one rail, i.e., unilateral LAZs occurring more likely, is treated for a speed up to 500 km/h. Structural vibrations of wheelset are analyzed to explain the transient contact forces, creepages and the resulting irregular wear. LAZs on high rails are found more detrimental than those on low rails. The results explain the occurrence of flats and rolling contact fatigue in bad weather, although significant wheel idling is absent.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据