Stationary shock waves in porous copper by SPH simulation

The mesoscopic simulation of stationary shock waves simulation in porous materials by a moving window method is proposed and developed for smoothed particle hydrodynamics. The mesoscopic simulation describes the material by the explicit definition of porous structure and uses an equation of state and strength properties of the bulk material only. To produce stationary shocks in the simulation we apply the constant inflow velocity of porous material to the computational domain but an iterative method for outflow velocity. This iterative method stabilizes the shock front at the prescribed position. The simulation of the shock produced by the standard solid wall boundary condition is consistent with the stationary shock produced in a moving-window.