Research of the Reduced Mass of the Railway Track

Dmytro Kurhan; Yaroslav Leibuk

doi:10.14513/actatechjaur.v13.n4.563

Authors

Dmytro Kurhan Dnipro National University of Railway Transport named after Academician V. Lazaryan, Department of Track and Track Facilities, Lazaryan st. 2, 49010, Dnipro, Ukraine http://orcid.org/0000-0002-9448-5269
Yaroslav Leibuk Joint Stock Company “Ukrainian railways”, Branch “Center of Engineering Structures for Construction and Repair” Zaliznychne Highway, 5B, 01103, Kyiv, Ukraine

DOI:

https://doi.org/10.14513/actatechjaur.v13.n4.563

Keywords:

railway, track and rolling stock interaction, reduced mass, wave propagation, stress-strain state

Abstract

In an overall view, a vehicle is described as a system of bodies interconnected by elastic and dissipative couplings. Bodies have a mass concentrated at a point, the movement of which describes their motion. Certain difficulties arise when introducing a railway track into such models. While interacting with the rolling stock, the track operates as an elastic body, and its mass is specified as reduced to the point of interaction. The purpose of this work is to provide a reasonable value of the reduced mass of the railway track depending on its parameters. The task is solved by applying a spatial model of dynamic deformations of the railway track on the basis of the elasticity theory. Such an approach makes it possible to determine which part of the railway track interacts with the wheel based on the propagation of deformations as elastic waves.

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