Кафедра "Будівельна механіка" (з 2016 року каф. "Теоретична та будівельна механіка")
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ENG: Department of Structural Mechanics 2016 "Theoretical and structural mechanics"
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Browsing Кафедра "Будівельна механіка" (з 2016 року каф. "Теоретична та будівельна механіка") by Author "Bolotov, Oleksij O."
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Item Influence of Loading from the Axle of a Gondola Car on its Dynamic Indicators and Railway Track(Дніпровський національний університет залізничного транспорту імені академіка В. Лазаряна, Дніпро, 2019) Shvets, Anzhela O.; Bolotov, Oleksij O.EN: Purpose. Increasing the maximum loading from the car axle on the rails during transportation of goods and the speed of movement of railway vehicles will enhance the integration processes between the countries. In order to ensure safe and reliable traffic at the railways it is necessary to improve control, quantitative evaluation of the dy-namic loading of the rolling stock, which in the process of its operation is a relevant scientific and technical prob-lem. The purpose of this work is to study the influence of the axle loading increase in gondola cars, taking into ac-count the possible speed increase on their main dynamic indicators and indicators of interaction of rolling stock and track. Methodology. The study was carried out by the method of mathematical and computer simulation of the dy-namic loading of a gondola car using the model of spatial oscillations of the coupling of five cars and the software complex developed in the branch research laboratory of the dynamics and strength of rolling stock (BRL DSRS). The initial data for research are as follows: the movement of gondola car of the model 12-532 with typical bogies of 18-100 at the speeds ranging from 50 to 90 km/h in curves with radii of 350 and 600 m, with superelevation of 130 and 120 mm, respectively. Findings. The article analyzes the dynamic qualities of a rolling stock using the example of gondola cars, the calculations are performed using the package of applied programs with sufficient accuracy for practice. During the theoretical studies and simulation, taking into account the processes of freight car oscillation in case of increasing the axle loading, the dependences of the main dynamic parameters, taking into account the movement speed were obtained. Originality. Originality of the work results lies in the study of the influence of in-creasing the axle loading in gondola cars, taking into account the possible movement speed increase on the dynamic loading in order to solve the problem of forecasting the rolling stock dynamics. The results of theoretical studies, taking into account the movement speed in the curved track sections of small and medium radius were obtained for the first time. Practical value. The application of these results will contribute to improving the traffic safety of freight cars and will improve the technical and economic performance of railway transport.Item Research of Dynamic Indicators and Influence of Different Types of Rolling Stock on Railway Track(IOP Publishing Ltd., 2020) Shvets, Anzhela O.; Bolotov, O. M.; Percevoj, A. K.; Ghlukhov V. V.; Bolotov, Oleksij O.; Saparova, L. S.EN: The technical level of rolling stock of railway transport directly affects the economic indicators of the transport industry and the economy of the country as a whole, which leads to the need for improvement of the control, quantitative assessment of the dynamic loading of rolling stock to ensure safe and reliable communication at the railways. Therefore, in the process of designing and operating the rolling stock the quantitative assessment of dynamic loadings is a relevant scientific and technical problem. The purpose of this work is to study the influence of different types of rolling stock, taking into account the speed of movement on their main dynamic indicators and indicators of interaction of track and rolling stock. The basis of the research is the method of mathematical and computer simulation of the dynamic loading of a freight car using the model of spatial variations of the coupling of five cars and a software complex developed in the branch research laboratory of dynamics and strength of rolling stock (BRL DSRS). Theoretical studies have been carried out under condition of movement of several types of freight cars: a gondola car of the model 12-532, a hopper car for coal transportation of the model 12-4034 and a flat car with a long cargo of the model 13-401 and typical bogies 18-100 with the speeds from 50 to 90 km/h in the curves with radii 350 and 600 m, with superelevation 130 and 120 mm, correspondingly.