Sound dispersion in a discrete dislocation system

The Granato-Lucke theory of dislocation internal friction is modified for the case in which the discreteness of the dislocation positions is taken into account. In this case a dislocation moves in an effective stress field differing from the excitation field, and the Granato-Lucke dispersion relations are altered accordingly.Translated from Ivestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 3, pp. 56–58, March, 1984.