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Information × Registration Number 0225U001143, (0120U105681) , R & D reports Title Analysis of the stress-strain state, vibrations and stability of compound shells of rotation, noncircular cylindrical shells with different cross sections and polygonal plates based on numerical and experimental approaches. popup.stage_title Проведення дослідження вільних коливань некругових циліндричних оболонок з різним поперечним перерізом та багатокутних пластин змінної товщини на основі чисельних та експериментальних підходів. Head Hryhorenko Oleksandr Ya., Доктор фізико-математичних наукHryhorenko Yaroslav M., Доктор технічних наук Registration Date 26-01-2025 Organization S.P. Tymoshenka Institute of Mechanics of the National Academy of Sciences of Ukraine popup.description1 Carrying out a study of stress-strain state, vibrations and stability of shells and plates of complex shape based on the developed numerical and experimental approaches. popup.description2 The free vibrations of inhomogeneous cylindrical shells with different cross-sections were studied in a refined formulation using an effective numerical analytical approach based on spline approximation. The frequencies and shapes of free vibrations of the corresponding structural elements were analyzed depending on the change in geometric, mechanical parameters and conditions of fastening the contours. The finite element method was used to determine the frequencies and shapes of free vibrations of isotropic hexagonal plates with different combinations of rigidly fixed edges and hexagonal plates with a hole with different combinations of rigidly fixed edges and a hole, and the frequencies and shapes of free vibrations of thin isotropic closed cylindrical shells of elliptical cross-section were calculated under different boundary conditions at both ends. The free vibrations of a hexagonal plate with free edges and a rigidly fixed central hole were studied using the resonance method. The free vibrations of a cantilever-mounted cylindrical shell of elliptical cross-section were investigated using the stroboholographic interferometry method.   Product Description popup.authors Boreiko Nataliia P. Borysenko Maksym Yu. Rozhok Liliia S. Kharytonova Lesia V. Yaremchenko Serhii M. popup.nrat_date 2025-01-26 Close