Dislocations in visco-elastic materials

Abstract

Abstract An expression is found for the force required to move a dislocation steadily through a visco elastic medium, in particular Zener's standard linear solid. It is applied to the case of a screw dislocation in iron exhibiting the Snoek effect. Sohoeok and Soeger'e atomic treatment of the same problem contains an error. When this is corrected the two methods give solutions of the same form.