Dislocation internal friction at random external loadings

Dislocation internal friction under random external forces acting upon a dislocation was investigated. Different types of random forces (telegraph, impulse, others) were considered. Inertial properties of dislocation and effects of potential (parabolic) crystal relief were taken into account. Analytical expressions for decrement were derived and its dependencies on a degree of correlation of random force, dislocation and medium parameters were analyzed.