Study of geometrically nonlinear deformation of multilayer shells of smalland medium thickness using the finite element method

We study the process of deforming a thin-wall structure at large deflection s using the modified incremental Lagrange theory [1]. We obtained relations necessary to construct resolving matrices and vectors when using FEM and d escribed the procedure of the stressed state recalculation when a step-by-s tep process is organized The work is an addition to a series of works [2-4] from which it differs by the technique of deformation calculation the clas s of approximations and the realization of the entire cycle of calculations of geometrically nonlinear deformation of multilayer shells of small and m edium thickness. The results of solving a set of test problems are presente d.