Browsing by Author "Kara, S."

Now showing 1 - 3 of 3
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    Creation of the image of the new generation freight car bogie.
    (2018) Gorbunov, M. I.; Kara, S.; Nozhenko, O.; Fomin, O.; Vaičiūnas, G.; Petrenko, V.
    Analysis of the operating problems of freight car bogies are carried out, analysis of the reasons for low dynamic qualities, which do not allow to increase the speed of movement. The main directions of the development of the bogies constructions are substantiated. The image of the new generation freight car bogie is formulated based on analysis, ideas of car building projects using the method of intellectual decision support. Concept image and patented technical solutions for implementation are solving the problem of minimizing the weight of the bogie (increasing of coefficient of mass utilization) by using a modular design, application of elastic-damping structures, prestressed state of structural elements. Technical solutions improve the strength characteristic and dynamic properties of the freight car bogies on the basis of the above principles of engineering.
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    Research to improve traction and dynamic quality of locomotives
    (2017) Gorbunov, M. I.; Pistek, V.; Kovtanets, M.; Nozhenko, O.; Kara, S.; Kučera, P.
    The article reviews and analyzes available theoretical and experimental studies aimed at improving the tractive and dynamic characteristics of locomotives. Based on the information received, the authors formulated the following tasks of further research to increase and stabilize traction and coupling qualities of the locomotive.
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    Theory and practice of the innovative spring suspension design for locomotive to improve its traction and dynamic characteristics.
    (2018) Gorbunov, M. I.; Kravchenko, K.; Kara, S.; Gerlici, J.; Bureika, G.; Steišūnas, S.
    This paper deals with the methods and techniques of the locomotive dynamic characteristics improvement, decrease in force impact on the track, minimizing tire and rail wear by secondary suspension improvement. Based on the calculations carried out using the created mathematical models and experimental research, there are proposed series of construction solutions of the supporting and returning devices with rational characteristics, which allow improving traction characteristics of the locomotive and reducing its dynamic impact on the track in vertical as well as in horizontal planes, on the straight track as well as on the curved track. Moreover, the proposed solution can provide the locomotive body with the centering function relative to the bogie. The proposed body to bogie connection was tested using a special test stand and in operating conditions. According to the test results, the proposed construction of body to bogie connection can ensure the required rigidity and damping characteristics due to the design optimization.