Résumé
The masonry structures represent a remarkable portion of the French and world built heritage. The preservation of these buildings requires a multidisciplinary diagnostic approach that includes a structural assessment to estimate their stability. However, this task remains difficult because of the high non linearity of the masonry material and the complexity of the geometries of this type of buildings. For this, several robust modeling strategies have been developed. Among these strategies, block based models based on the discrete element method and more specifically the NSCD (Non Smooth Contact Dynamics) allow to take into account the actual texture of masonry. However, in this type of approach, blocks are elastic and non linearity appears only at the interfaces between blocks governed by cohesive frictional laws. In this study, a new hybrid approach is proposed. It consists in integrating a model combining damageworld-builtcity in finite element blocks. The validation of this numerical approach is carried out on the basis of an experimental campaign on masonry walls tested in shear and subjected to vertical loading.