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Information × Registration Number 0221U101975, 0120U101775 , R & D reports Title Investigation of the stability of reinforced composite materials and shell elements of structures with them with different types of geometrical and structural imperfections popup.stage_title Head Nazarenko Volodymyr M., Registration Date 27-01-2021 Organization Institute of Mechanics. S.P. Tymoshenko of the National Academy of Sciences of Ukraine popup.description2 Based on the asymptotic Biskow-Hutchinson method, an algorithm for constructing an analytical solution to the problem of the influence of various types imperfections on the stability and post-buckling behavior of composites cylindrical shells has been developed. The method is based on refined equations of Tymoshenko-Mindlin theory of shells. The method of continuous extension by Davydenko was used to pass critical points on the deformation trajectory. Data on the influence of initial geometric and structural imperfections on the buckling loads and the nature of the initial post-buckling behavior are obtained. Local defects of the shell surface and general defects in the form of the bulging mode, which occurs at buckling of the ideal shell, were considered. The influence of imperfections of the shell material in the form of incomplete contact of the components of the fibrous composite is also investigated. Studies of the behavior of shell structures under compressive loads are of both theoretical and practical interest. The results can be used in the creation of modern structures in mechanical engineering and instrumentation, aerospace.  Product Description popup.authors Bystrov Victor M Velichko Larisa G Dekret Volodymyr A Dovzhik Mikhailo V Zhukova Nataliia B Zagorodniuk Olena M Zelenskii Valerii S Kipnis Oleksandr L. Martynova Liudmila I Semenyuk Mikola P TSiruk Sergii A Chishchevyi Volodymyr I popup.nrat_date 2021-01-27 Close