Abstract: Armor penetration aftereffect overpressure produced by reactive material liner shaped charge is researched through experiments and theoretical analysis. Quasi-static explosion experiments are carried out to investigate the overpressure produced by reactive material liner shaped charge impacting the steel plates with different thicknesses. The result shows that the overpressure decays parabolically with the thickness of plate. Based on the quasi-steady incompressible Bernoulli equation, a model is developed to describe the armor penetration aftereffect overpressure by introducing the self-delay time of reactive materials. The results calculated by the proposed model show a good consistence with the experimental results. And the influence of the self-delay time of reactive materials on armor penetration aftereffect overpressure is analyzed.

Key words: ordnance science and technology, shaped charge, reactive material liner, armor penetration aftereffect overpressure, shock-induced initiation, energy release