Browsing by Author "Manashkin, Lev A."
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Item Railway Transportation of Dangerous Goods: a Bibliometric Aspect(Dnipro National University of Railway Transport named after Academician V. Lazaryan, 2019) Kolesnykova, Tetiana O.; Matveyeva, Olena V.; Manashkin, Lev A.; Mishchenko, Maksym I.ENG: Abstract. The purpose of this paper is to research and define the promising worldwide scientific trends in the field of railway transportation of various dangerous goods. To obtain relevant empirical data, the authors reviewed the world literature on paper topic using Scopus and Web of Science citation bases. We determined that this research was focused on several major thematic areas: 1) automation and telematics systems; 2) navigation systems; 3) logistics; 4) energy; 5) locomotives; 6) freight cars; 7) materials; 8) rails; 9) impact on the environment and people. The article used mapping, ensuring a visual perspective for researchers and helping to understand general situations in specific subject areas of the research. This study provides useful information concerning the development of the field of research for the railway transportation of dangerous goods, identifying those academics (authors, countries and institutions) that have made the greatest contribution to its development and defining the priority research directions.Item Simulation of Wheelset Movement in Car Dynamics Problems(Centro Sviluppo Materiali S.p.A., 2009) Manashkin, Lev A.; Myamlin, Serhiy V.; Pshinko, Aleksandr N.EN: The movement of the wheelset as a whole is analyzed as the forward and rotary movement of wheel rims, the forward and rotary movement of the wheelset axis together with the wheels naves, and the torsion of the wheelset. Recommendations on the choice of the torsion parameters are given.Item To the Question of Modeling of Wheels and Rails Wear Processes(Дніпропетровський національний університет залізничного транспорту імені академіка В. Лазаряна, Дніпропетровськ, 2013) Manashkin, Lev A.; Myamlin, Serhiy V.EN: Purpose. There is a need of wear process modeling in the wheel-rail system. This is related to the fact that the wear processes in this system are absolutely different in the initial and final stages. The profile change of rail and, especially, of the wheels caused by the wear significantly affects the rolling stock dynamics, traffic safety and the resource of the wheels and rails. Wear modeling and the traffic safety evaluation requires the accounting of the low frequency component forces (including the modeling of transitional areas) affecting the wheel on the side of the rail and carriage in motion of rolling stock, so the statistical analysis is not possible. Methodology. The method of mathematical modeling of the wheel set and the rail interaction was used during the research conducting. Findings. As a result of the modeling of the wheel set motion on the rail track, the mathematic model with 19 freedom degrees was obtained. This model takes into account the axle torque and studies wheels constructions as the components of the mechanical systems, consisting of a hub and tire. Originality. The mathematic model allows evaluating the wear degree of the wheels and rails when using on the rolling stock not only all-metal wheel sets, but also compound ones with the use of spring wheels and independent rotation of semi-axes with the wheels. Practical value. The development of the improved mathematical model of freight car wheel set motion with differential rotation of the wheels and compound axles allows studying the wear processes of wheels and rails.