Vol. 15, no.2, 2023


Сalculation of rolling stock movement along the railway track by the grid-characteristic method

1,2Anton A. Kozhemyachenko

Moscow Institute of Physics and Technology, https://mipt.ru/
Dolgoprudny 141701, Moscow Region, Russian Federation
2Scientific Research Institute of System Analysis of RAS, https://www.niisi.ru/
Moscow 117218, Russian Federation
E-mail: anton-kozhemyachenko@yandex.ru

Received May 4, 2023, peer-reviewed May 11, 2023, accepted May 18, 2023

Abstract: The application of a grid-characteristic method is proposed for numerical simulation of the movement of rolling stock along a railway track laid on an earth and a bridge. In the study, the railway track is presented using a dynamic system of equations of the theory of elasticity of hyperbolic type. The grid-characteristic method relies on the characteristic properties of the system under consideration and uses finite-difference schemes of high order of accuracy to obtain a space-time solution. The features of railway structures are considered by changing the boundary conditions and conditions at the contact borders. To simulate the areas of contact of wheel pairs of rolling stock with the rail – the "wheel-rail" system – a previously developed pressure boundary condition is applied, modified so as to consider multi-element rolling stock. As a result of computer simulation of the movement of rolling stock along the railway track of various types, full-wave stress distribution in the track structure is obtained, which makes it possible to predict dangerous sections of rolling stock movement.

Keywords: computer simulation, grid-characteristic method, wheel-rail, rolling stock, railway track

UDC 519.63

RENSIT, 2023, 15(2):193-198e DOI: 10.17725/rensit.2023.15.193

Full-text electronic version of this article - web site http://en.rensit.ru/vypuski/article/493/15(2)193-198e.pdf