Wyboczenie cienkiej powłoki przy obciążeniach obrotowo symetrycznych poza granicą sprężystości

The basic equations are derivated, and critical load evaluation method for elastic-plastic thin-walled conical shell is presented. It is assumed that the shell is subjected to the following, external, axially symmetric loads: lateral uniform pressure, external uniform hydrostatic pressure, longitudinal compressive force, acting along the shell generatrix. Taking into account, Shanley's concept, for each case the relations are given enabling to find critical loads according to the both basic plasticity theories (incremental and total strain). The material's compressibility and linear-type stress-strain characteristic are taken into account. The problem is solved by the orthogonalization method. Numerical results are given in diagrams.