ABSTRACT
A scalar damage model and a crack opening model are applied to describe the behaviour of brittle materials. The damage laws take into account for different behaviours in tension and in compression. The definition of the damage constitutive model is suitable for extensions to more complex laws including tensorial damage. The crack opening model consists in a re-meshing which enable one to describe the progressing of the fracture in the material. The criteria for the opening of the cracks consist in an evaluation of the stress or strain state in the neighbourhood of the tip. The interaction between the two sides of the crack are not considered here but can be simply accommodated in the model. An application to the three points beam problem is presented.
