Strength and buckling analysis for cylindrical shell panels by various strength theories

The purpose of this work is to offer a comprehensive analysis of the buckling and strength of shell structures in accordance with several strength theories at once. Linear-elastic thin-walled orthotropic cylindrical panels are considered taking into account geometric nonlinearity and transverse shear. The applicability of seven strength criteria was analyzed: the maximum stress criterion, Mises–Hill criterion, Fisher criterion, Gol’denblat–Kopnov criterion, Liu–Huang–Stout criterion, Tsai–Wu criterion, and Hoffman criterion. The calculations were based on the characteristics of T-10/UPE22-27 glass-fiber-reinforced plastic. Simultaneously with the strength of the structure, its buckling was analyzed. The value of the critical load has been obtained. The analysis of the development of areas of non-fulfillment of strength conditions was conducted. The proposed method allows obtaining the most complete information about the process of deformation of the structure. The use of several strength criteria makes it possible to verify the obtained load values. The study of areas of non-fulfillment of the strength conditions allows in future to make a decision on strengthening the structure with stiffeners.