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Information × Registration Number 0311U003674, 0107U000435 , R & D reports Title Development of new non-traditional approaches based on discrete-continued methods and combined modeles on investigation deformation and failure of composites for solving modern constructions strendht and durability problems. popup.stage_title Побудова моделі та розв'язування задач нестаціонарної динаміки дискретно підкріплених оболонок на пружній основі при імпульсних навантаженнях Head Grigorenko Yaroslav, Доктор технічних наук Registration Date 26-05-2011 Organization S.P.Timoshenko Institute of Mechanics popup.description2 A design technique of the natural vibrations and dynamic stress-strained state of a cylindrical shell reinforced with cross system of ribs and interacted with axisymmetric elastic foundation is developed. It is assumed that elastic foundation inhibits to normal displacement of a shell (on Vincler) and rotation of its middle surface around of circular coordinate line (model Pasternak) also. The methods are based on the classic theory of shells and rods, system of equations is obtained using the energy method. To solve the motion equations it is used the method of expansion of solution on the natural vibration modes. Using the developed methods it was carried out the investigation of stress-strained state of cylindrical shell reinforced by longitudinal ribs under action of steady and increased in time impulse loading. It was compared the shell displacements and bending moments obtained with account of elastic foundation and without it. Product Description popup.authors Луговий Петро Захарович Скосаренко Юрій Валентинович popup.nrat_date 2020-04-02 Close