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Information × Registration Number 0120U101775, ( 0221U101975  0222U001895  ) R & D request Title Investigation of the stability of reinforced composite materials and shell elements of structures with them with different types of geometrical and structural imperfections Head Nazarenko Volodymyr M., д.т.н. Registration Date 30-03-2020 Organization S.P. Tymoshenka Institute of Mechanics of the National Academy of Sciences of Ukraine popup.description1 Creation of the method of calculation of critical loads and trajectory of deformation of composite cylindrical shells having different types of initial imperfections of the surface: local in the form of dents and general, copying the form of loss of stability of the perfect shell. Investigation of the characteristic features of deformation of shells with geometric defects of the surface depending on their size and location of these defects, as well as mechanical properties of the shell material and the type of loading. Development of a technique for solving the problems of stability of composite materials reinforced by layers and short fibers in a heterogeneous subcritical state as part of a three-dimensional approach. Investigation of internal and surface loss of stability in the structure of composite materials during compression by surface loading. popup.nrat_date 2024-12-10 Close