ARTICLE
Cause investigation of metro corrugation in vehicle braking section of track
1
Institute of Rail Transit, Tongji University, Shanghai, China
Submission date: 2021-02-08
Final revision date: 2021-07-17
Acceptance date: 2021-07-22
Online publication date: 2021-09-28
Publication date: 2021-10-20
Journal of Theoretical and Applied Mechanics 2021;59(4):637-647
KEYWORDS
TOPICS
stability and vibrations systemsdynamics of machines, vehicles and flying structurescomputational mechanicsfriction problems in dynamics
ABSTRACT
In order to study the cause of rail corrugation in the tangential braking section near the metro
entrance, a transient rolling contact model of three-dimensional solid wheelset-track was
established by using the finite element software ABAQUS, and the corrugation phenomenon
was analyzed in the time-domain and frequency-domain based on the field measurement. The
results show that the unstable friction self-excited vibration of the wheelset-track system
is the fundamental cause of rail corrugation in the measured section, and it is precisely
because of the “saturated-unsaturated” periodic characteristic of the wheel-rail creep force
that ultimately promotes the formation of rail corrugation.
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| eISSN: | 2543-6309 |
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