Numerical modeling of masonry wall under underground waves

Abstract

The dynamic behavior of structures has always received considerable attention. The dynamic behavior of structures requires the suitable numerical modeling method in order for the behavior of structures under dynamic loads to be illustrated. In this study, the response of two identical unreinforced masonry walls to the underground blast was examined. The experimental variables were the horizontal distance from the explosion point and depth in which the explosives were located. After examining the behavior of the masonry walls under high-frequency dynamic loads, different numerical models were applied to simulate the dynamic behavior of these two walls against the underground blast experiments. Thus, a number of different factors, including yield criterion, types of meso and macro modeling for the masonry wall, and topography of the site were investigated. Finally, due to the degree of accuracy required, it was concluded that each of the methods can be used; however, the most appropriate and accurate modeling method for the unreinforced masonry wall is the frictional-cohesive zone material and modified Mohr-Coulomb model, which provided accurate and precise responses.