Ugrimov S. Non-stationary deformation of multilayer anisotropic elements of structures

The object of research is processes of strain and propagation of waves in one- and multilayer anisotropic elements in the structures subjected to nonstationary force loads. The objective of the dissertation is to develop effective methods for investigating the processes of nonstationary strain in anisotropic laminated bodies. Research methods - analytical-numerical.The results obtained are a theoretical and practical basis for engineering design of laminated elements of structures in various engineering areas. A new generalized model of multilayer plates with orthotropic layers has been suggested. A new analytical-numerical method has been developed for solving the 3D problem in impulse strain of a simply supported multilayer plate with orthotropic layers. New results have been obtained in the theoretical and experimental investigation into the processes of strain in sapphire structures with different orientations of crystallographic axes therein. The results obtained have been used for designing the elements of a composite external sheeting of electric locomotives at LLC PKPP "MDS" (Dnipro); developing a bird imitator for testing the bird collision resistance of aircraft elements, and analysing the strength of multilayer glazing elements of airplanes at SE Antonov (Kyiv) and PJSC "Spetstekhsteklo A" (Konstantynivka). Areas of use - aerospace engineering, automotive, housing and industrial building.