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Information × Registration Number 0226U002224, (0124U004864) , R & D reports Title Research on the strength of shell elements of rocket and space technology systems under the action of impulse loads popup.stage_title Уточнена постановка задач про нестаціонарне деформування неоднорідних оболонкових конструкцій обертання Head Lugovyi Petro Z., Доктор технічних наук Registration Date 11-02-2026 Organization S.P. Tymoshenka Institute of Mechanics of the National Academy of Sciences of Ukraine popup.description1 Research on the strength of layered shell elements of rocket and space technology structures under the action of impulse loads within the framework of various models based on effective numerical and analytical approaches popup.description2 The problems of unsteady deformation of three-layer spherical–cylindrical combined shells with a discrete-symmetric lightweight rib-reinforced filler under impulse loading are investigated. A refined problem formulation and a computational model of shells of revolution are developed based on the geometrically nonlinear Timoshenko shell and beam theory with independent hypotheses for each layer. The equations of motion are derived using the Hamilton–Ostrogradsky variational principle. The influence of boundary conditions and structural parameters on the dynamic behavior of three-layer shell elements is analyzed. For the numerical analysis of the stress–strain state, a three-dimensional finite element model is developed using the MSC Nastran software package. An approach to determining the impulse load on spherical-cylindrical shells under a plane shock wave is proposed, and the distribution of the maximum diffraction pressure along the perimeter of the structure is obtained. Product Description popup.authors Kotenko Kostiantyn E. Луговий Петро Захарович Скосаренко Юрій Валентинович Podilchuk Inna Yu. Shugajlo Oleksij P. Koliadiuk Andrii S. Prokopenko Nina Yakovlivna Meish Yuliia Anatoliivna Orlenko Serhii Petrovych Olkhovskyi Anton S. popup.nrat_date 2026-02-11 Close