35 articles in this issue
V. I. Havryliuk
On the basis of literature data analysis, an updated mathematical model has been developed, which describes electromagnetic processes in rail circuits during movements of electrified rolling stock. The model takes into account inductive influence of curre... see more
V. I. Profatylov
A method of the automated measuring of contact pressure of railway automatics relay is offered in the article. The method is based on the design features of railway automatics electromagnetic relays, in which the falling of the armature occurs under the a... see more
J. Mikulski
The paper presents method of carrying out and scope of tests preceding acceptance of railway traffic control equipment for application in Polish State Railway (PKP). Terms of commissioning of equipment manufactured for railways are imposed by internationa... see more
M. M. Biliaiev,O. V. Koptilaia
A computer model to simulate the ammonia cloud concentration reduction with sprinklers which used water or acid was developed. The model is based on 3D equation of admixture transfer written both for ammonia and neutralizator. The results of numerical exp... see more
M. M. Biliaiev,N. S. Zyonh
A mathematical model to calculate pollution of the Rivers Dnipro and Samara after an emergency discharge of a pollutant has been developed. The model is based on 2D equations of annual river hydraulics and the impurity transfer equation. The results of nu... see more
O. O. Ivasiuk,O. M. Pshinko,V. M. Plakhotnik,Yu. L. Zaiats
The paper concerns the issue of boron-fluoro-hydrogenous acid (BFH) water solutions influence on concretes, usually used as flooring materials. A considerable destructive effect of this acid is demonstrated, which can be explained by combined influence of... see more
V. M. Plakhotnik,L. O. Yaryshkina,A. M. Boichenko
General directions for emergency procedure and organization measures, aimed at eliminating the after-effects of railway accidents with dangerous and toxic freights, are determined, in view of assessing the ecological consequences of such accidents.
M. H. Visin,B. T. Vlasenko,A. I. Kiiko
A functional chart of DC electric locomotives recuperative braking automatic control system, with power supplies of excitation windings from a static activator, has been developed.
H. K. Hetman,S. V. Arpul
A technique of determining power efficiency of modular traction for provision of the freight railway operations is offered in the article.
L. V. Dubynets,O. I. Momot
In clause with use of the theory of probability the influence of reduction of types of spare relays on a level of their trouble-free work is investigated. The expediency of realization of unification of all kinds of the relay is shown which are applied in... see more
M. O. Kostin,V. V. Artemchuk
The authors have performed the probability forecasting of parametrical reliability of wheelset axlebox frames of electric locomotives according to criterion of wear. The law of distribution of the frame diameter value D at an arbitrary value of the locomo... see more
V. I. Borshchov,M. K. Zhurbenko,O. S. Raspopov,B. D. Sukhorukov
The article considers the behaviour of sectional structures, with 110m rated flight length, manufactured under standard projects 690/7K or 690/7?, at movement of trains made up of empty gondola cars on these structures.
O. V. Hrishyn,B. V. Savchynskyi
The article offers the procedure and programmatic complex for joint calculation of a breast wall and soil massif as a unified conjunct dynamic system. The novelty of task consists in the fact that in its study the theory of plastic flow with consolidation... see more
M. B. Kurhan
The proposed optimization method is based on usage of a non-additive function of cutting the train running time upon sections (facilities), subject to reconstruction. The effect in the optimization procedure is being reached thanks to introduction of new ... see more
V. V. Rybkin,M. B. Kurhan,N. V. Khalipova,V. I. Kharlan
An approach has been proposed to substantiation of the track plane parameters with the aim of removal of barrier places. The approach is based on modelling spatial fluctuations of freight and passenger cars and provides for comfort of passenger journeys a... see more
V. O. Andriushchenko,V. V. Skalozub,V. V. Velykodnyi,S. Yu. Tseitlin
Analogues have been constructed of Mason topologic equations for flows graphs, described by fuzzy values. Based on the fuzzy data on railway operation processes, the issue of forecasting the foreign-owned wagons movement periods has been considered.
A. A. Bosov,Ye. O. Momot
A technique of determining the options of the passenger train rational pattern has been proposed.
I. M. Kukushkina
An economic and mathematical model of empty carflow rational regulation has been offered, with account of expenditures, related to the time losses by cars and the freight in a pre-loading demurrage, and also the costs of the cars moving from the points of... see more
T. F. Mykhailova,O. V. Piskunova,O. A. Riadno,P. I. Prykhodko
By means of a linear programming mathematical model, the cost optimization problem has been considered for coal raw material processing and transportation processes.
M. I. Kapitsa
The article examines one of the options of determining the function of insulation resistance in tractive electric motor excitation windings, according to the values of reverse voltage, based on approximation of functions and the theory of technical object... see more
I. Ye. Levytskyi
Railway transport, as a producer of a wide range of logistic services, offers the transport services market delivery of freights at a shortened time or transportation services with differentiated periods of delivery.
A. L. Pulariia,O. V. Shatunov,M. A. Hrichanyi
Based on the results of operational and striking tests, an estimation of the possibility of applying elastomeric absorbing devices in Ukrainian high-speed passenger cars has been performed.
O. M. Bondariev
The article provides the results of theoretical calculations of short circuit emergency operation modes in supply circuits of the stator windings of asynchronous tractive motors at start-up of the locomotive, hauling a freight train.
V. L. Horobets
With the aim of precise definition of endurance margin factors of the rolling-stock carrying structures and calculation of amplitudes of symmetric cycles of their loading, equivalent in their destructibility, a calculation model has been offered, which ta... see more
I. V. Klimenko
The article describes modern designs of the bogies, with approved dynamic parameters, for high speed foreign and Ukrainian-produced diesel and electric locomotives. The current tends in Ukrainian locomotive-building industry have been discussed.
S. A. Kostrytsia
The possibility of using the finite elements method for optimal designing of railway rolling stock has been considered. The general optimization scheme, based on the gradient projection method, has been proposed.
D. O. Bannikov,M. I. Kazakevych
The paper enlists the most important points of modern designing concept of rigid steel bunkers as a separate class of building structures. Its drawbacks and also the main problems, preventing from creation of a sufficiently reliable, durable and repairabl... see more
V. Ye. Volkova
In a theoretical study of oscillations the necessity of building a mathematical model arises. For this purpose the data of technical drawings, descriptions, and also other documentation about the structure and meaning of separate parameters, will be... see more
B. H. Klochko,D. V. Horydko,V. V. Punahin
The article presents the results of experimental and theoretical studies of structure-forming processes in activated cement matrix of concrete. The possibility of obtaining concretes with rated operational properties has been demonstrated.
M. D. Kostiuk,O. M. Pshinko,V. D. Petrenko,S. V. Tsepak
Comparative calculations of earthen railway bed have been performed and regularities of the influence of loading onto change of strains have been determined.
A. V. Radkevych
The article, with the help highly-efficient flow algorithm and usage of intra-system links, on the basis of direct and dual problems, develops a theoretical substantiation of grounded selection of sub-contractor and timely and efficient renewals of ... see more
Yu. S. Barash
The article analyzes intermediate results of reforming the structures of railway transport management in developed European countries after adoption of the European Union’s declarations on the issue. The conclusion has been made that the governments of Eu... see more
T. A. Mukminova
The article is devoted to the questions of reforming the organizational model of railway transport management and determination of the effective degrees of centralization of an infrastructure company’s managerial functions.
A. A. Pokotylov
The article investigates the economical and legal issues and main directions for formation of the new quality of CIS countries’ transport system in conditions of development of modern market economy.
T. V. Teslenko
The contents of the article envisage an analysis of the rates of railway transport managerial structures reformation in Germany, Poland and Russia.