Investigation of transient wheel-rail interaction and interface contact behaviour in movable-point crossing panel

The high-speed turnout is a key part of railway track infrastructure. A process of wheel-load transition and single-wheel/multi-track contact take place in the turnout area, causing significant wheel-rail interaction. Most high-speed turnouts include movable-point crossings. To investigate the wheel...

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Bibliographic Details
Published in:Vehicle system dynamics 2024-05, Vol.62 (5), p.1103-1121
Main Authors: Hao, Chaojiang, Wang, Ping, Xu, Jingmang, Liu, Yibin, Chen, Jiayin, An, Boyang, Yi, Qiang, Wang, Shuguo
Format: Article
Language:English
Subjects:
Contact stresses
Dynamic response
Equivalence
Finite element method
High speed
modal analysis
Parametric analysis
Plastic deformation
Railway tracks
Rolling contact
rolling contact behaviour
turnouts
Wheel-rail interaction
Wheelsets
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Summary:The high-speed turnout is a key part of railway track infrastructure. A process of wheel-load transition and single-wheel/multi-track contact take place in the turnout area, causing significant wheel-rail interaction. Most high-speed turnouts include movable-point crossings. To investigate the wheel-rail transient rolling contact behaviour in movable-point crossings, a 3D finite element (FE) model of a wheelset rolling over a crossing was introduced. The actual geometrical profile of the wheel and the rails in turnouts, the nonlinear materials, the actual relative motion between the point/wing rail, and the moving postures of the wheelset were considered. The simulated mode shape was compared with the experimental mode shape to verify the wheel-rail coupling model. Precise frictional rolling contact solutions and dynamic response, including wheel-rail force, contact stress, equivalent stress, equivalent plastic strain, and stick-slip distribution of the contact patches, were all studied. After this, the parametric analysis of dynamic wheel-rail contact behaviour was carried out. The simulated results indicate that the proposed explicit finite element method can characterise wheel-rail coupled dynamic interaction and mesoscopic rolling contact behaviour well, and improve the understanding of wheel-rail contact behaviour in the movable-point crossing panel of the high-speed turnouts.
ISSN:0042-3114
1744-5159
DOI:10.1080/00423114.2023.2217962