Industrial Automatic Control Systems and Controllers Annotation << Back Modeling of Shielding Structures to Ensure the Functional Stability of Critical Information Infrastructure Objects Under Destructive Electromagnetic Influences A.A. Dviliansky, M.Yu. Rytov, V.A. Shkaberin, V.A. Ivanov The article presents an approach to mathematical modeling that differs from the existing ones by taking into account the effect of reversibility of screens based on the tensor representation of the electromagnetic field (EMF), using the finite element method, as well as the properties of radio-absorbing polymer composite materials, the shape, number and location of technological inhomogeneities in a multilayer structure, which allows to obtain physically realizable shielding structures based on the synthesis of surface impedance (FRAC), which ensures the functional stability of components of critical information infrastructure objects (CII) under destructive electromagnetic infl uences. The results of simulation 3D computer modeling in the software environment of fi nite element analysis COMSOLMULTIPHYSICS 5.4 based on the proposed mathematical model are also presented. Keywords: physically realizable shielding structure, critical information infrastructure, finite element method; simulation computer modeling, shielding structure, synthesis of impedance coating, external impact, boundary conditions. DOI: 10.25791/asu.1.2023.1408 Pp. 14-23.