Marchuk M. Stress-Strain State and Vibrations of Composite Shells and Plates with Perfect and Imperfect Layer Contact

Stress-strain state of layere plates and shells with taking into account the structural delamination and transversal vibrations of composite plates. The specified variant of linear and geometrically nonlinear theory for dynamic and static deformations of pliable to transversal shear and compression for orthotropic composite shells and plates with minimal order for resolving system of differential equations is constructed. A new method of calculation for thin-walled element layered composite structures with perfect and imperfect layer contact - the mixed scheme of finite element method for displacements-contact stresses are presented and justified. The simplified variant of specified theory for dynamic deformations of pliable to transversal shear and compression plates is presented. By assistance of presented method the amplitude-frequency dependencies in the case of nonlinear vibrations for composite plates are obtained. Areas of applications: machine building industry,air-and spacecraft technologies.