“…The damaged zones can be analyzed via numerical analyses, using PFC 2D , which employs the DEM (Distinct Element Model), and AUTODYN 2D , which employs the FEM (Finite Element Model). Both these software were used to verify the effect of eccentric charges based on a comparison of the damaged zones [23], so numerical analyses were carried out using these software in this study. PFC 2D is the distinct-element modeling software provided by Itasca.…”