Title Influence of unilateral low adhesion on transient wheel-rail rolling contact and wheel damages
Author Zhao, X
Huang, S
Yin, S
Yang, J
Yang, Z
Tao, G
Wn, Z
Affiliation State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu, China
Section of Railway Engineering, Delft University of Technology, Delft, The Netherlands
Publication Date 2022
Conference 12th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, 4-7 September 2022, Melbourne, Victoria, Australia
Abstract 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.
File - click thumbnail to download
CM 2022_Zhao2
Physical Description 11p.; PDF
Subjects Railway track
Rolling contact
Wheel
Wear
Finite element method
Modelling
Rail transport
Location ARRB library
Category Rail Knowledge Bank Index Infrastructure Wheel/rail interaction
Rail Knowledge Bank Index Infrastructure Track