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Information × Registration Number 0223U000188, 0120U101784 , R & D reports Title The study of stress-strain and limiting states of isotropic and orthotropic bodies with V-shaped notches and cracks under static and cyclic loadings popup.stage_title Head Savruk Mykhaylo P., Доктор фізико-математичних наук Registration Date 05-01-2023 Organization Karpenko Physico-Mechanical Institute of NASU popup.description2  The method of singular integral equations for two-dimensional problems of the theory is developed elasticities of homogeneous and piecewise homogeneous orthotropic and anisotropic bodies with cracks, holes and corner cuts. The stress state of a piecewise homogeneous plane (orthotropic matrix and anisotropic inclusion) was calculated for the antiplane deformations The stress distribution near the corner cutouts in anisotropic was obtained plane, stress intensity coefficients for lenticular holes were calculated and broken cracks in the orthotropic plane. An analytical-numerical algorithm has been developed determination of optimal shapes of holes in quasi-orthotropic plates for biaxiality tension and shear. The influence of the method of loading and the level of orthotropy was studied material into the shape of optimal holes. A two-parameter criterion was developed destruction of elastic bodies with sharp and rounded corner cuts by symmetrical load. The stress state and ultimate equilibrium were calculated flat isotropic rectangular sample with rounded V-shaped cutouts. An asymptotic approach to the construction of the corresponding two-parameter is proposed power criterion. Mathematical models of the healing process of separation cracks were built, transverse and longitudinal shear in anisotropic bodies. Solutions are obtained corresponding boundary value problems for three types of displacements of crack surfaces. The peculiarities of the healing of defects in anisotropic bodies have been established. Received ratios for selecting injectable materials that will provide recovery elements of constructions to a predetermined level of the service capacity resource. Based on the solution of the boundary value problem of fracture mechanics about the limit equilibrium elastic circular disk with cracks under the action of a moving model contact load developed a new model for evaluating the durability of rolling pairs with taking into account the forces of sliding frictio Product Description popup.authors Ivantyshyn Nataliya A. Glazov Artem Yu. Datsyshyn Oleksandra Petrivna Кravets Volodymyr S. Marchenko Hryhorij P. Onyshko Liubov Yo. Savruk Mykhaylo Sylovanyuk Viktor Petrovych Chornenkyi Andriy popup.nrat_date 2023-01-05 Close