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Information × Registration Number 0224U002161, 0119U103374 , R & D reports Title Numerical modeling of the dynamics and statics of layered shell elements of complex geometry as applied to objects of the atomic and space industries. popup.stage_title Head Luhovyi Petro Z., Registration Date 06-02-2024 Organization S.P.Timoshenko Institute of Mechanics popup.description2 A calculation model of asymmetric three-layer shells of rotation with a discrete-symmetric lightweight, rib-reinforced aggregate under forced dynamic loads was created. According to the variational principle of Hamilton-Ostrogradsky, the equations of motion of three-layer shells of rotation and natural boundary conditions were obtained using the Tymoshenko model of the theory of shells and rods. This made it possible to deliberately create an adequate finite-element model for three-layer shells of rotation, which are made of different materials, and to obtain numerical results of the nature of the dynamic behavior of three-layer structures under non-stationary loads. The method of spline couplings was developed to determine the dynamic characteristics of ribbed conical shells with asymmetric layers interacting with masses under the action of dynamic loads. The stress-strain state of a conical shell with symmetric and asymmetric layers, longitudinal ribs and masses under the action of a short-term axisymmetric external load is analyzed. The effect of the physical and mechanical parameters of the layers on the dynamics of an asymmetric spherical shell under axisymmetric internal impulse loading was studied. A frequency analysis of oscillations was carried out and new mechanical effects were discovered. Product Description popup.authors Holovko Kostiantyn H. Kotenko Kostiantyn E. Lugovyy Petro Z. Meish Yuliya A. Olkhovskyi Anton S. Orlenko Serhii P. Podilchuk Inna Yu. Prokopenko Nina Ya. Skosarenko Yurii V. Shuhailo Oleksii P. popup.nrat_date 2024-02-06 Close