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Information × Registration Number 0224U002390, 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 13-02-2024 Organization S.P.Timoshenko Institute of Mechanics popup.description2 Equations of oscillations of three-layer symmetric and asymmetric cylindrical shells are derived, taking into account heterogeneous discrete-symmetric aggregate. Shell theories are applied using independent hypotheses for each of the layers. New finite-element models were developed, which made it possible to determine the stress-strain state of heterogeneous structural elements under the action of static or dynamic loads. According to the results of the performed calculations, the first natural frequencies of the protective shells of the NPP were determined, the forms of oscillations of which are the most energy-intensive. Cylindrical shells of rockets, which are subjected to periodic aerodynamic loads and engine operation, have their own frequencies determined, which makes it possible to prevent unwanted resonance phenomena Product Description popup.authors Holovko Kostiantyn H. Hracheva Vira A. Krytskyi Volodymyr B. Lugovyy Petro Z. Meish Yuliia A. Orlenko Serhii P. Podilchuk Inna Yu. Prokopenko Nina Ya. Skosarenko Yurii V. Shuhailo Oleksii P. popup.nrat_date 2024-02-13 Close