Вибрані статті з наукових збірників
Постійне посилання на фондhttps://repositary.knuba.edu.ua/handle/987654321/27
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Документ Experimental researches of elastomeric materials to stabilize the oscillation of power grid structures(КНУБА, 2015) Priadko, Iurii; Tanasoglo, Anton; Garanzha, IgorThis paper proposes a new type of insulator, has both insulating and damping properties to improve the operational reliability of overhead power lines' structures (OHPL). In order to assess an effectiveness of the new insulator's design have made laboratory tests of a insulator model with different types of elastomer seals, differed of the rubber marks and the type of reinforcement. An experiment consist of two stages: at the first stage an object of study has been exposed to cyclical vibration, at the second – the impact of an impulsively load. Results of the research showed, that the most effective are the elastomeric gasket with a minimum rigidity characteristics without reinforcement. Using insulators with such dampers allows to reduce the first maximum impulse to a support by an average of 20% and reduce the frequency and amplitude characteristics of the system. Based on this was developed a new type of elastomer reinforcing with steel sheet elements in the form of a truncated cone.Документ Influence of loading is from a rolling stock on the dynamic behavior of multi-storey building(КНУБА, 2014) Luk’yanchenko, O. O.; Kostina, O. V.; Gerashchenko, O. V.The investigation of the rolling stock load influence on the multi-storey building being under construction in the close to the railroad area has been conducted. FEM calculation models of the ballast prism and the building in the interaction with the base soil were created. The acceleration of the soil at the depth of the foundation laying was obtained and, as the result, its influence on the dynamic behavior of building was evaluated.Документ Parametric resonanse in statically indeterminate frames(КНУБА, 2014) Vorona, Yu. V.; Luk’yanchenko, O. O.; Kostina, O. V.The technique for development and reduction of discrete dynamics models of frames is presented. Construction of the models is carried out using finite element method, generalized coordinates and tools of modern computer software. Parametric resonance in a statically indeterminate frame caused by external excitations is investigated. Main instability domains of the frame are determined.