Metlov L. Structural rebuilding and dynamical effects in solids

A change of defect structure of solids is studied theoretically with using of molecular dynamics methods and nonequilibrium thermodynamics. An effect of spontaneous concentration of energy into high-energetic soliton-like excitations, for which the power law energetic distribution is realized, was founded on non-linear chains. Dislocations with narrow and wide cores are founded on two-dimensional models of crystal lattice by methods of computer modeling, what can play meaning for explanation of some peculiarities of nanomaterials and phenomenon of merging of grains with mutually perpendicular oriented axis's of symmetry with formation ideal structure of crystal mustache type. An influence of structural weakening on spectrum elastic waves emerging at collision of two solids was studied by macroscopic particle method. A new form of kinetic equations was proposed for description of entropy and defect production. The possibilities of approach are illustrated on a model example of a solid with vacancies and applied for modeling of processes during severe plastic deformation. Moreover, in a framework of approach the phenomenon of autovibration transitions between amorphous and nanocrystallite states in amorphous alloys, phenomenon of zonal disintegration and so on are described.