hybrid layered plates, polygonal, with and without contour of right angles, pinching and hinging on the contour, the first (extremely elastic) and second (pre-fracture state) limit states, the criterion of reaching the limit states, the determination of the limit loads.

For a class of hybrid laminated plates with contours that do not have right angles under various conditions of loading and fixing the contours, a method has been developed for determining the first (extremely elastic) and second (pre-failure load) ultimate loads. The criteria for their achievements, obtained the necessary systems of solving equations and described the method of their solution.

Nemirovskii Yuri Vladimirovich, Dr. Sci. Phys. & Math., Professor, Leading Research Worker, S. Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the RAS, Novosibirsk, Russia.