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Information × Registration Number 0217U000910, 0112U000251 , R & D reports Title Modern problems of vibrations, stability and controlability of elements of the mechanical systems at the dynamic loadings popup.stage_title Head Kubenko Veniamin Dmitrievich, Registration Date 20-03-2017 Organization S.P.Timoshenko Institute of Mechanics popup.description2 1. Approaches to the study of non-stationary processes in electroelastic bodies in the form of closed and open-ended spherical shells and round in terms of plates under the action of mechanical or electrical impulse type loads were developed. problem drawing the approach reduced to a system of Volterra integral equations in the numerical solution of which used classical computational procedures. 2.It is investigated wheeled transport robot with three links. The first part of transport robot has one degree of freedom. Two following parts join consistently by means of spherical hinges. A basic surface is flat; the robot moves in an angular corridor. Algorithms of calculation of dynamic loading of elements of parts of robot are developed for the subsequent engineering estimation of reliability of system. These calculations consist of a finding of speeds and accelerations of characteristic points of robot and determination of dynamic reactions of nonholonomic constraints with the purpose of banning their breaks. 3.Main engine thrust throttling increases the mass of the launcher payload. The inclusion of energy storage to electric propulsion system and using of the proposed new control method may lead to an increase in payload mass of transfer vehicle. The new way of tether deployment is recommended. 4.New methods are proposed for stability investigation of oscillations of mechanical systems with impulse effect which take into account the structure of gyroscopic, dissipative and potential forces. In critical cases, after the system of perturbed motion differential equations is reduced to the normal form, it is reasonable to apply direct Lyapunov method, for which efficient ways of constructing auxiliary functions are developed. The example of coupled generators of electromagnetic oscillations (nonlinear three-dimensional systems) characterized by different inertial properties, is used to establish conditions of new motions occurrence at synchronization. Product Description popup.authors Антонюк Євген Якович Кіфоренко Борис Микитович Ковальчук Петро Саввич Кубенко Веніамін Дмитрович Ларін Володимир Борисович Мартинюк Анатолій Андрійович Нікітіна Неллі Володимирівна Нікітіна Неллі Володимирівна Слинько Віталій Іванович Слинько Віталій Іванович, пр.н.с. Ткаченко Ярослав Володимирович Янчевський Ігор Владиславович popup.nrat_date 2020-04-02 Close