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The block element method is used to study the behavior of a coated material under
the assumption that the surface is exposed to a corrosive liquid medium that can destroy the
coating. It is assumed that the destruction begins with the formation of vertical local cracks in
the coating, which then grow and lead to the exposure of the unprotected surface. Assuming
the possibility of modeling a liquid layer by shallow water equations, the block structure
including a body in the form of a deformable layer, a defective coating modeled by Kirchhoff
plates and a heavy liquid layer is investigated. The distribution of stress concentration in such
a block structure is studied. The analysis showed that even in the presence of a liquid, the
features of the stress-strain state of the material inherent in the case of its absence are
preserved. The conditions both allowing further use of such object and excluding this
possibility are revealed.
Keywords: block element, plates, topology, differential factorization methods, exterior forms, block structures, boundary problems, starting earthquakes, hidden defects |
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