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Information × Registration Number 0217U002056, 0114U006059 , R & D reports Title The static and dynamic calculs of constructions elements and machines details for the industry and the agriculture popup.stage_title Head Demianenko F.G., Registration Date 16-01-2017 Organization Dnipropetrovsk state agrarian and economik university popup.description2 This paper describes features of the mathematical models for the elastic elements with movable load and for the elastic elements of changeable length. In these systems two forms of own oscillations - the own component and the accompanying one, displaced in phase to the right angle correspond to every frequency of the system. The accompanying component is caused by the mobile inertia load or by the changeable length and they are not trivial only when this factor exists.The oscillations occur in the linearly elastic simply supported beam which is simulated by the Timoshenko's equations. The aim of the investigation is determination of the load critical speed values. The problem of characteristic frequencies finding is solved. Dependences of the first six characteristic frequencies on the load motion speed were obtained after the numerical experiment implementation. The received results can be used at a design of bridges, pipelines and other structures which experience the moving loads action The following system reactions and loads acting on the nodal connections copying mechanism ground anchor disk-opener. Compound system of equations for the scheme, defined minimum and maximum stress in the joints. Field tested and mikrometrazh. The mathematical model of motion of particle is considered taking into account the resistance of the environment. Product Description popup.authors Гурідова В.О. Дем'яненко А.Г. Кагадій С.В. Науменко М.М Швайко В.М. popup.nrat_date 2020-04-02 Close