Please use this identifier to cite or link to this item: http://lib.kart.edu.ua/handle/123456789/20658
Title: Revisiting the reasons for contact fatigue defects in rails
Authors: Darenskiy, Alexander
Potapov, Dmitry
Tuley, Yuseph
Bugaets, Natalia
Malishevskaya, Alina
Issue Date: 2017
Publisher: EDP Sciences
Citation: Darenskiy A. Revisiting the reasons for contact fatigue defects in rails / A. Darenskiy, D. Potapov, Yu. Tuley, N. Bugaets, A. Malishevskaya // MATEC Web of Conferences. - 2017. - Vol. 116 (03001 ). - Р. 1-7.
Abstract: As it is known rail is one of the most significant elements of the whole railway construction. Operation under alternating loads from wheels of the rolling stock and different ambient temperatures lead to appearance and development of rail defects and damages. A great variety of operational factors (freight traffic density, axial loads, traffic speeds, track layout and profile) as well as special features of manufacturing and thermal treatment of rails create certain difficulties while identifying reasons for defects and damages. The article deals with an attempt to estimate influence of track layout and lateral forces on appearance of defects and damages in rails on the base of long-term observations of rail operation in Kharkiv Metro. On the basis of the vehicle/track mathematical model which considers structural features of both rolling stock and permanent way in underground systems, the level of lateral forces in curves was calculated. The coefficients of correlation between the track curvature, the level of forces and the amount of defected rails removed were later obtained, that made it possible to determine the dominant factor which may lead to appearance and development of contact fatigue defects in rails laid in curves.
URI: http://lib.kart.edu.ua/handle/123456789/20658
ISBN: 978-2-7598-9022-4
Appears in Collections:2017

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