Hovorukha V.V., Hovorukha A.V., Sobko T.P., Semyditna L.P. Method for studying spatial vibrations of a vehicle during its movement along the rail track on separate supports with elastic-dissipative and inertial properties

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Parent Category: Geo-Technical Mechanics, 2022

Category: Geo-Technical Mechanics, 2022, № 162

Geoteh. meh. 2022, 162, 13-28

https://doi.org/10.15407/geotm2022.162.013

 

METHOD FOR STUDYING SPATIAL VIBRATIONS OF A VEHICLE DURING ITS MOVEMENT ALONG THE RAIL TRACK ON SEPARATE SUPPORTS WITH ELASTIC-DISSIPATIVE AND INERTIAL PROPERTIES

Hovorukha  V.V., Hovorukha  A.V., Sobko  T.P., Semyditna  L.P.

Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine

UDC 625.1:625.1.03:622.6:639.4

Language: English

Abstract. In the paper, the authors describe a method for studying spatial vibrations of a vehicle with wheels freely rotating on wheelset axles during their movement along the rail track on individual elastic supports with elastic-dissipative properties of points of rail resting on sleepers, as well as with bending of rails between sleepers in the vertical and transverse directions when transport units moves along curved and rectilinear sections of track with inertial properties. The purpose of the work is to improve accuracy of studies of the interaction between components of the transport system by using a new method for studying the mechanics of motion of a vehicle along the rail track with individual elastic-dissipative supports instead of the existing method of studies of motion along the rail track with a solid elastic base. The proposed method of studies is most closely approximated to the actual conditions of operation of the rail track consisting of rail-sleeper grid. A mathematical model of the new method for studying the motion of a vehicle along rail track with separate elastic supports is presented. An important feature of the new method is consideration of:  track discreteness, which is caused by the presence of a rail-sleeper grid with variable distance between supports and track laying diagram with different length of spans between the sleepers; inertial, stiffness and dissipative properties of intermediate rail fasteners, sleepers and base in points where rails are installed on sleepers; elastic properties of rails between supports and directly on supports. Moreover, there is a possibility to study loads and forced vibrations of a vehicle in vertical and transverse directions for cases with reinforced concrete, wooden or other sub-rail base. The proposed method and mathematical model are provided for purposeful studies of the influence of the rail track laying diagram with certain or necessary spans between supports or sleepers on the loading and related stress-strain state of all rail track elements, including rails, sleepers and sub-sleeper base. The results of the study can be applied to research conducted on railway, industrial and underground rail transport.
Keywords: mechanics of motion, rail track, rail-sleeper grid, vehicles.

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About authors:

Hovorukha Volodymyr Vasylovych, Candidate of Technical Sciences (Ph.D), Senior Researcher of the Department of Geomechanical Foundations of Surface Mining Technologies, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Hovorukha Andrii  Volodymyrovych, 1^st Class Engineer of the Department of Geomechanical Foundations of Surface Mining Technologies, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Sobko Tamara Petrivna, Master of Science, Main Designer of the Department of Geomechanical Foundations of Surface Mining Technologies, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Semyditna Liudmyla Pavlivna, Master of Science, Leading Engineer of the Department of Geomechanical Foundations of Surface Mining Technologies, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

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