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Information × Registration Number 0119U103519, ( 0221U103802  0222U001791  0224U001658  0224U001752  0225U002609  ) R & D request Title Investigation of the behavior of different structure composite materials (reinforced by short fibers and layered) and shell structures made of them at conditions of compressive loadings Head Nazarenko Volodymyr M., д.т.н. Registration Date 25-10-2019 Organization S.P. Tymoshenka Institute of Mechanics of the National Academy of Sciences of Ukraine popup.description1 The purpose of the work is: - development of a numerical-analytical technique for solving the problem of the fracture of composite materials at compression along interacting cracks in three-dimensional formulation; - study of critical stresses and shortenings in composites at compression along interacting cracks; - development of methods for studying the stress-strain state of a piecewise homogeneous body withsmall-scale cracks at the angular point of the interface; - development of a numerical-analytical technique for solving the problem of the destruction of composite materials at compression along interacting cracks; - development of new numerical models, development of methods for solving discrete problems, creation and implementation of appropriate software for solving plane and spase problems of determination of boundary effects and stability of composites; - research in the framework of the three-dimensional approach of the influence of structural heterogeneity and complex conditions of compressive loads on the buckling of composite materials, which are reinforced by layers and short fibers; - development of an algorithm for solving the problem of nonlinear deformation and stability of layered cylindrical shells, taking into account their sensitivity to imperfections; investigation of critical loads of layered cylindrical shells and prediction of the nature of their post-buckling behavior in order to choose rational schemes of reinforcement and placement of layers popup.nrat_date 2024-12-10 Close