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Investigation of transient wheel-rail interaction and interface contact behaviour in movable-point crossing panel.
- Source :
-
Vehicle System Dynamics . May2024, Vol. 62 Issue 5, p1103-1121. 19p. - Publication Year :
- 2024
-
Abstract
- 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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00423114
- Volume :
- 62
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Vehicle System Dynamics
- Publication Type :
- Academic Journal
- Accession number :
- 176294253
- Full Text :
- https://doi.org/10.1080/00423114.2023.2217962