Molecular dynamics study of the penetration resistance of multilayer polymer/ceramic nanocomposites under supersonic projectile impacts

We simulated ballistic impact tests of multilayer polyurea/silicon-carbide (SiC) nanostructures using molecular dynamics (MD). First, we conducted density functional theory calculations to obtain accurate parameters to model the nonbonded interactions of the polyurea/SiC interface and subsequently investigated the influence of interfacial adhesion on the impact response. Our MD simulations demonstrate that the ballistic limit velocity and the...