The finite-size particle-in-cell method for numerical simulation of pulsed high-energy-density loadings on matter

The finite-size particle-in-cell method for numerical modeling of pulsed high-energy density loadings on matter was developed. A mutual Lagrange-Eulerian representation of continuum used allows us to solve the problems with contact– and free–surfaces, as well as flows with strong deformations and strain rates. To calculate mixed cells we proceed from the assumption that pressures and temperatures are equal inside of a cell. Using a parallel SPMD implementation of the method we simulate the hypervelocity impact of lead spherical impactor on lead plate. The results of computer modeling were compared with experimental x-ray photographs.