Kurennaya K. Nonlinear anharmonical effects while excitement and spreading of the normal waves in the crystalline layer

The problem of analytical representation of nonlinear normal waves in the solid layer is considered. The model of physically and geometrically nonlinear deforming is used. Nonlinear waves displacements are represented as series by the small parameter (acoustic Mach number) degree. Analytical solutions are obtained for the case of monochromatic and interactive normal SH- and P-SV-waves spreading in the elasticequivalent direction and for the case of normal threepartial waves spreading in the nonelasticequivalent direction in the plane of a monocrystal layer. Kinematic and energetic characteristics are investigated for all waves types. Data about the nature of the influence of factors of the geometrical and physical nonlinearity are generalized. The intensity of the anharmonic distortions wavefield is defined in comparison with the linear wavefield.