Наукові публікації та патенти в рамках виконання держбюджетних науково-дослідних робіт 2020 р.
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Browsing Наукові публікації та патенти в рамках виконання держбюджетних науково-дослідних робіт 2020 р. by Author "Gerlici, J."
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Item Clarification of features of the wheel movement with a perspective constructive scheme on a rail(2020) Mikhailov, E.; Semenov, S.; Kliuiev, S.; Dižo, J.; Blatnický, M.; Gerlici, J.; Harušinec, J.; Kovtanets, M.The article presents the continuation of studies of the features of the wheel movement the traditional and perspective constructive scheme on a rail. Unlike the traditional design, the perspective constructive scheme of the wheel allows independent relative rotation of the support surface wheel and of its guide surface (flange) relative to their common axis of rotation. Previous authors’ works did not take into account the influence of the level of slippage in the main contact of the wheel with the rail on the value of the slippage rate in its flange contact. This article further examines the influence of this factor for both wheel designs. The results of the presented studies confirm the possibility of reducing slippage in the flange contact with the rail for a wheel of a promising design scheme in comparison with a traditional wheel. Reducing the power of friction forces in the contact of the wheel flange of a promising design scheme will reduce the resistance to movement of such a wheel along the rail, especially in curved track sections.Item Determination of the regularities of the covered wagon supporting structure dynamic loading when conducting fire from it in the horizontal plane.(2021) Fomin, O.; Lovska, A.; Gerlici, J.; Fomina, Yu.; Fedosov-Nikonov, D.; Prokopenko, P.A study of the supporting structure dynamic loading of a covered wagon for the military equipment transportation and for firing has been carried out. A mathematical model has been drawn for this purpose, taking into account the vertical and angular displacements relative to the longitudinal axis (side rolling) of the wagon supporting structure when firing. Accelerations as the components of the dynamic load acting on the wagon supporting structure have been determined. It was found that the accelerations acting on the wagon supporting structure in the vertical plane were about 6.0 m/s2 (0.6 g). In the horizontal plane, the accelerations were 2.6 m/s2 (0.26 g). That is, the wagon movement can be assessed as “satisfactory”. To reduce the wagon dynamic loading during the conduct of fire, it is proposed to install elastic vibration dampers under the support sectors. In this case, the horizontal acceleration was about 2 m/s2 (0.2 g). Taking into account the proposed technical solutions, the wagon dynamic load is reduced by about 25% in comparison with the case of the rigid interaction of the sector with the frame. The strength analysis of the covered wagon bearing structure has been carried out. It was found that the maximum equivalent stresses are concentrated in the area of the front stops and are about 315 MPa. The conducted research will contribute to the creation of recommendations for the design of covered wagons for the military equipment transport and for firing, as well as to increase the efficiency of the railway transport operation..