Boundary Conditions for Modeling the Impact of Wheels on Railway Track

The distribution of the dynamic load on railroad track caused by a moving heavy train is numerically simulated. The track is represented as a multilayered linear elastic medium. A complete system of equations describing the state of a linear elastic body and a system of continuum mechanics equations...

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Bibliographic Details
Published in:Computational mathematics and mathematical physics 2020-09, Vol.60 (9), p.1539-1554
Main Authors: Kozhemyachenko, A. A., Petrov, I. B., Favorskaya, A. V., Khokhlov, N. I.
Format: Article
Language:English
Subjects:
Boundary conditions
Computational Mathematics and Numerical Analysis
Continuum mechanics
Dynamic loads
Elastic bodies
Elastic media
Impact damage
Mathematical analysis
Mathematics
Mathematics and Statistics
Railroad wheels
Railway tracks
Stress concentration
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Summary:The distribution of the dynamic load on railroad track caused by a moving heavy train is numerically simulated. The track is represented as a multilayered linear elastic medium. A complete system of equations describing the state of a linear elastic body and a system of continuum mechanics equations are solved. The grid-characteristic method is used, which ensures the formulation of correct contact and boundary conditions. Analytical expressions taking into account the impact of damaged wheels on rails are derived, and corresponding boundary conditions are developed and numerically implemented.
ISSN:0965-5425
1555-6662
DOI:10.1134/S0965542520090110