Кафедра "Теоретична та будівельна механіка"<br>(з 2022 р увійшла до складу кафедри Технічна механіка ДІІТ) (з 2016 року об’єднано каф. "Теоретична механіка" та каф. "Будівельна механіка")

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http://crust.ust.edu.ua/handle/123456789/9307

ENG: Department "Theoretical and Structural Mechanics" "Theoretical Mechanics" and "Structural Mechanics"

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Improving the Dependability Evaluation Technique of a Transport Vehicle
(Kaunas Univ. of Technology, Lithuania, 2020) Babyak, Mykola O.; Neduzha, Larysa O.; Keršys, Robertas
EN: The safety of vehicles depends on the dependabiliti of its elements, which should guarantee the trouble-free operation throughout the entire service life. The concepts of "safety" and "dependabiliti" for the vehicle are inseparable. Therefore, all structural components throughout the entire service life before the onset of the limit state must guarantee trouble-free operation of rolling stock with the installed system of maintenance and repair, i.e. be in working condition as long as possible and perform all necessary functions. Regarding the relevance in predicting the technical condition of a vehicle, authors present improving the dependabiliti evaluation technique of its facility by the value of a safety factor. The impact of actual operating conditions of rolling stock on durability and operability (on the example of a pantograph) is taken into account. The nearest relation between the dependabilitiof a structure and a safety factor and parameters of probability distributions of stresses is determined. Improving the technique can be used to evaluate the dependabiliti of the facility from the viewpoint in the individual prediction of operability and life of the structural elements for the vehicle based on observations over the process of their wear. This will increase the safety and dependabilitiof operation for all complex structures.
Simulating the Operation of the Pantograph-type Current Collector
(KTU leidykla „Technologija“, Kaunas, Lithuania, 2022) Babyak, Mykola O.; Kalivoda, Jan; Neduzha, Larysa
ENG: The usage of electricity to increase the safety and environmental friendliness of transportation is a very important issue. The common feature in the work of different types of electric transport is the dependence on reliable contact with the conductor from which it receives power. The reliability of the constant movable contact between the conductor with current and electrical equipment depends on the precise operation of the pantograph complex mechanism. To simplify the planning calculations and approbation of structures, a pantograph model with two degrees of freedom is proposed. It gives an adequate description of the real system and improves the mathematical apparatus while calculating the forces and dynamic displacements of the pantograph mechanisms for electric transport.
Transportation Optimization of Homogeneous Freight in the Transport Systems
(KTU leidykla „Technologija“, Kaunas, Lithuania, 2022) Babyak, Mykola O.; Neduzha, Larysa
ENG: There are situations where, due to various circumstances, a large number of direct routes in the freight traffic running (which were traditionally used) can not satisfy transport users. Then there is a need to find new routes for the transportation of freight from departure points to destinations. The authors present an example to solve the transport task for the setting transportation routes in an extensive network, taking into account the specifics of transportation of homogeneous freights on concrete sections of railways. This allows optimizing the plan of transportation for homogeneous freightes in the transport systems. This is relevant for the development of new transport routes, especially in modern conditions.

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