Plane stress plasticity in periodic composites

In this paper a homogenised constitutive relation for the global behaviour of periodic composite structures is derived in the case of elasto-plastic material components. In principle, the representative volume element could be aected by any kind of non-linear material behaviour respecting the complementarity rule, therefore special emphasis is put on the description of the generality of the algorithm. The method is currently restricted to small strains, plane problems and monotonic proportional loading conditions.