A spherical cavity-expansion penetration model for concrete targets

We developed a spherical, cavity-expansion penetration model for concrete targets. Target constitutive descriptions idealized pressure-volumetric strain as incompressible or linear compressible and idealized shear strength-pressure as Mohr-Coulomb with a tension cutoff. We showed these idealized material descriptions were reasonable approximations to triaxial material data. Predictions from the compressible penetration model are in good agreement with depth of penetration data for a 30.5-mm-diameter, 1.60 kg, ogive-nose, rod projectile for striking velocities to 1100 m/s. © 1997 Elsevier Science Ltd