Analysis and Modeling of the Behind-Plate Overpressure Caused by a Polytetrafluoroethylene/Aluminum/Tungsten Reactive Fragment

Abstract: In this paper, the behind-plate overpressure caused by a polytetrafluoroethylene/aluminum/tungsten (PTFE/Al/W) reactive fragment is theoretically and experimentally analyzed. The theoretical energy of the PTFE/Al/W reactive materials is calculated by analyzing the chemical reaction of these compositions. Furthermore, based on the one-dimensional shock wave theory and the energy release behavior of the reactive fragment, an analytical model of the behind-plate overpressure is developed. By using binary quadratic polynomial fitting, a polynomial expression of the mass loss of the initiated reactive materials is derived based on the experimental data. The results show that the theoretical analysis model can be used for estimating the overpressure when a reactive fragment impacts an aluminum plate within experimental conditions.