RT Journal Article SR Electronic A1 Manuylov, Gaik A. A1 Kositsyn, Sergey B. A1 Grudtsyna, Irina E. T1 Numerical and Analytical Investigation of Stability of the Reinforced Plate JF Communications - Scientific Letters of the University of Zilina YR 2021 VO 23 IS 4 SP B278 OP B287 DO 10.26552/com.C.2021.4.B278-B287 UL https://komunikacie.uniza.sk/artkey/csl-202104-0017.php AB The work is aimed at the construction of an algorithm for studying the equilibrium states of a reinforced plate near critical points, using the first (cubic terms) nonlinear terms of the potential energy expansion. Using geometrically nonlinear analysis of displacement, deformation and stress fields, the Eigenforms of buckling were calculated and bifurcation solutions and solutions for equilibrium curves with limit points were constructed depending on the initial imperfections.