Orthotropic homogenized modeling of masonry wall panels
Journal of Structural Engineering & Applied Mechanics
The behavior of masonry walls which consist of two different materials, brick and mortar, is quite complex. Therefore, the mechanical behavior of masonry walls can be simplified by adopting the homogenization technique, which considers the panel with average properties in the x-and y-directions. The wall is approximated as an orthotropic homogenized material with uniform properties in the bed direction, xdirection, and also in the direction perpendicular to the bed, y-direction. The nonlinear
... on. The nonlinear orthotropic mechanical behavior of masonry walls is developed by adopting an incremental finite element analysis approach for the prediction of the peak and post peak behavior. Based on continuum damage mechanics and a proposed failure criterion, the calculation of the damage evolution can be expressed by adopting the thermodynamics approach in the tension regime and a secant stiffness approach based on a proposed and modified constitutive law in the compression regime. Using the principles of continuum damage mechanics, the damage evolution can be then described and evaluated. The proposed model has been verified in compression and tension with very good correlation with tests. In addition, a lateral pushover analysis of a masonry panel has been performed and compared with experimental results, and the comparison show good correlation.