Study on Minimal Charge Explosive Driving Two Mass Load

According to the instantaneous detonation, under the minimal charge ratio (C/M) condition, we study that small-mass explosives drive mass load to move.The load driving speed is deduced under the charge conditions subjected to weak constraint and strong constraint.Under the weak constraint charge condition, considering the radial scattering of the charge shells, the two-dimensional calculation model of the load motion of the explosives is obtained base on Gurney equations.Under the strong constraint condition, according to the entropy expansion of the detonation product, the calculation model of the mass loading driven speed is obtained.The motion test of the mass driven by the detonation is carried out under two kinds of constraints.Under the weak constraint condition, the load driving speed increases with the decrease of the length-diameter ratio of charge.Under the strong constraint condition, the load driving speed increases with the increase of the charge weight, and with the increase of the diameter ratio of the charge cavity and the moving cavity.