Дегтярев В.Т., Лосев А.Ю., Музыка П.А. «Техника моделирования дислокационных процессов в твердом теле при ультразвуковом нагружении» Наукоемкие технологии, 9, № 10, с. 32-35 (2008)

Рассмотрена реализация программного комплекса, позволяющего исследовать поведение ансамблей «лесных» дислокаций в ультразвуковом поле и «скользящей» дислокации при ее движении через колеблющийся лес закрепляющих дислокаций. Research of interaction of structural defects under influence of external fields of the various nature concerns to pressing questions of solid-state physics. As is known, influence of sign-variable forces leads to change of the major physical properties of materials. For example, as a result of ultrasonic processing decrease in a limit of fluidity of metal can probably be achieved, that allows to receive a wire made of fragile metals by an extract. At the description of effect of plasticization of crystals in an ultrasonic field usually consider influence of ultrasound on a system "dislocation – dot defects". In the present work the basic attention is given to movement of elements of a dislocation structure. The models considering influence of ultrasound on 1) redistribution of dislocations, 2) generation of dislocations by a Franc–Ride source, 3) process of passing by a dislocation of a modelling platform have been developed for the description of an acoustoplastic effect. The program complex realized during work allows to research mechanisms of influence of ultrasound on evolution of dislocation structure and the changes of physical properties of materials caused by it. Influence of ultrasound on process of interaction of dislocations of various systems is considered. For the first time dislocation processes in an ultrasonic field are analysed with use of the equations of dynamics of dislocations. Application of the dynamic approach has allowed to reveal new effects and to receive more exact quantitative estimations for processes, considered earlier on quasistatic approach. So, for example, generation of dislocations by Franc–Ride source which ends make the forced fluctuations for the first time is considered.