A consistent phenomenologioal theory is developed for t,he plastic deformation properties of a restricted class of polycrystalline metals. The t,heory introduces the concept of a “hardness state” that can be related to the dislocation “structure” generated in the course of plastic deformation. The conditions t,hat must be satisfied if a plastia equation of state is t,o hold are investigated, an...

The geometrical formulation of continuum mechanics provides us with a powerful approach to understand and solve problems in anelasticity where an elastic deformation is combined with a non-elastic component arising from defects, thermal stresses, growth effects or other effects leading to residual stresses. The central idea is to assume that the material manifold, prescribing the reference conf...