Effect of shock-wave loading conditions on the behavior of a PETN-based plastic explosive

The paper reports results of investigation of the spallation and initiation of an explosive transformation in the plastic explosive formulation TP-83 under shock-wave loading. In the first case, specimens 20 mm thick were imp acted by explosive driven steel plates 1.0 and 1.6 mm thick at velocities o f 120-420 m/sec, and in the second case, the impact velocity was 430-580 m/ sec. In addition, in the second case, specimens 5 mm thick were impacted by copper plates with a thickness of 0.10-0.28 mm accelerated to velocities o f 590-1250 m/sec. The loading conditions were calculated in an elastoplasti c formulation. The relationships between the loads leading to shock-induced spallation and explosive transformation of the explosive formulation are o btained and represented analytically.