Abstract

The general solution of the radiated field from a nonuniformly moving ramp dislocation with general time-dependent ramp displacement function is obtained. Special cases of it, for arctan displacement with certain constant or time-dependent width and step function displacement, and for motions starting from rest at time t=0 and moving thereafter nonuniformly, are presented. The solution is in terms of quadratures which will be evaluated when the time-dependent functions become known. A special case, the ramp dislocation starting from rest and moving with a constant velocity thereafter, is analyzed with particular emphasis on the wave-front and near-field behaviour.

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