Numerical Study on Ballistic Impact Behaviour of Natural Rubber

Finite element analysis was performed to explore the perforation behaviour of the natural rubber sheets against the conical nose projectile. The mass and diameter of the impactor were 5 gm and 7.62 mm, respectively. The natural rubber sheet was 100×100 mm 2 , and three different thicknesses were used for the ballistic shot under normal impact. To perform the numerical simulations, a commercial finite element code LS-Dyna was employed. To simulate the perforation of the natural rubber material, the Mooney-Rivlin model was employed, and for bullet rigid model was used. The performance of the sheet was evaluated based on energy absorption, ballistic limit, and residual velocity. The FEA damage model results were found to be closely correlated with existing numerical results based on the literature.