Drift of dislocation tripoles under ultrasound influence

• Interaction of dislocation tripoles with a standing ultrasound wave is simulated.
• Translational motion of tripoles is found.
• The basic condition for tripole’s drift is formulated.
• Mutual rearrangements between different dislocation tripoles are studied.
• Dependence of the drift velocity vs. external frequency and amplitude is obtained.

Numerical simulations of dynamics of different stable dislocation tripoles under influence of monochromatic standing sound wave were performed. The basic conditions necessary for the drift and mutual rearrangements between dislocation structures were investigated. The dependence of the drift velocity of the dislocation tripoles as a function of the frequency and amplitude of the external influence was obtained. The results of the work can be useful in analysis of motion and self-organization of dislocation structure under ultrasound influence.