Numerical simulation of projectile perforation of a concrete panel

This paper simulates the perforation process of a fiber-reinforced-concrete slab impacted by a cylindrical steel projectile. In the numerical simulation, a piece-wise linear Drucker-Prager strength criterion and an isotropic continuum damage model to model the material of the target are proposed. The damage model is characterized by a damage scalar that depends on an equivalent plastic strain. The proposed material model is incorporated into the commercial software AUTODYN through a user-defined-subroutine function. A two-dimensional axi-symmetric perforation problem is analyzed. Results are compared with published experimental data. Good agreements of the exit velocity and damage area are obtained.