Abstract: Recent advances in experimental techniques have enabled impact tests of ultrathin films. For example, microprojectile impact tests of ultrathin polymer films have revealed that their specific penetration energy is about ...

Abstract: We conducted large-scale molecular dynamics (MD) simulations of shock wave propagation and spallation in amorphous polyurethane and polyurea. First, we computed the shock Hugoniot of the polymers using the multiscale shock ...

Abstract: A generalization of the quasicontinuum (QC) method to finite temperature is presented. The resulting “hotQCâ€‌ formulation is a partitioned domain multiscale method in which atomistic regions modeled via molecular dynamics ...