A. A. Semenov

ANALYSIS OF THE STRENGTH OF SHELL STRUCTURES, MADE FROM MODERN MATERIALS, ACCORDING TO VARIOUS STRENGTH CRITERIA

The paper analyzes the possibility of applying five different strength criteria (maximum stress criterion, Mises-Hill, Pisarenko-Lebedev, Fisher, Goldenblat-Kopnov) to calculating the strength of orthotropic shell structures. We consider shallow shells of double curvature, square in plan, panels of cylindrical and conical shells. A geometrically nonlinear mathematical model of their deformation, taking into account transverse shearing, is used. For calculations, the characteristics of modern orthotropic materials are used, such as fiberglass and CFRP. An increase in the areas of the failure of strength conditions with increasing load is shown.

Acknowledgments: The study was supported by the RF Ministry of Education and Science within the frame-work of the state order, project No. 9.5605.2017/8.9.

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