The Use of Concrete Damage Plasticity for Modeling Shear-Compression Tests on Stone Masonry Panels

Modeling complex historical masonry structures to assess their seismic vulnerability poses a challenging but fundamental task in the realm of cultural heritage conservation. In complex situations, it may become necessary to adopt elaborate approaches and refined models, relying on continuum mechanics and the application of inelastic constitutive laws. However, the numerous nonlinearities inherent to masonry materials make the choice of the most appropriate constitutive law extremely difficult. Furthermore, there is an inherent challenge in experimentally determining the parameters of the chosen constitutive model. This work is part of a broader study aimed at investigating the ability of different material constitutive laws to simulate the in-plane failure modes of masonry panels. Here, we considered the Concrete Damaged Plasticity constitutive law and explored the influence of the mechanical parameters variability on the results in terms of ultimate horizontal load within a probabilistic framework. The sensitivity of the response to input parameters was evaluated through the calculation of Sobol’ indices, highlighting the parameters worthy of further investigation when dealing with the seismic assessment of historical masonry buildings.