A numerical model for masonry implemented in the framework of a dicrete formulation

A direct discrete formulation suitable for the nonlinear analysis of masonry structures is<br />presented. The numerical approach requires a pair of dual meshes, one for describing displacement fields,<br />one for imposing equilibrium. Forces and displacements are directly used (instead of having to resort to a<br />model derived from a set of differential equations). Associated and nonassociated flow laws are dealt with<br />within a complementarity framework. The main features of the method and of the relevant computer code<br />are discussed. Numerical examples are presented, showing that the numerical approach is able to describe<br />plastic strains, damage effects and crack patterns in masonry structures.