On the role of moving elastic-plastic boundaries in strain gradient plasticity

摘要

Gradient plasticity theories which are used to describe size effects require nonstandard boundary conditions. We believe that the role of these boundary conditions in combination with a moving elastic-plastic boundary has so far not been well understood. In order to clarify the conditions which are required at such an internal boundary, semi-analytical solutions are derived for a foil in pure bending. Two variants of gradient theories are considered, for which the necessary conditions are significantly different.