Nonlinear Wave Processes in Polycristalline Solids with Hysteresis-Loss Saturation and Relaxation

Using the perturbation method, we study the processes of nonlinear propagation of the initially harmonic elastic waves in micro-inhomogeneous media, namely, polycrystalline solids with hysteresis-loss saturation and relaxation. The media with the basic hysteresis types, elastic and inelastic, are considered. The efficient nonlinearity parameters of such media are determined for the processes of self-action of a quasiharmonic wave and generation of its higher harmonics.