Simulating masonry failure using continuous and discontinuous damage models

Abstract

In this contribution we propose and compare two finite element models for modelling damage in masonry structures. The first model belongs to the class of discontinuous models, in which masonry failure is modelled through the insertion of discrete displacement jumps at the mortar joints. Discontinuities are incorporated using the Generalised Finite Element Method (GFEM), allowing for an on-the-fly introduction of cracks. The second model is a novel continuous model, in which masonry damage is smeared out over a finite volume. Mesh-sensitivity of strain localisation in this model is regularised by means of a gradient enhanced damage model which takes into account the anisotropy of masonry.