冲击载荷作用下武器战斗部装药Grüneisen物态方程

Aiming at the application problem of PBX explosive in weapon warhead, the effects of plane positive shock wave to the state equation of PBX explosive were studied. Based on the planar shock wave equation and the Hugoniot curve, using symmetric collision experiments, the state equation of different densities of PBX explosive under different shock wave loading were studied through the relationship of the application of shock wave velocity and particle velocity. In the research results, the impact factors and sound velocity of different densities PBX explosive were obtained. The relevant parameters of the Gruneisen state equation were obtained, which provided an important basis for predicting the internal pressure, density and energy state of the PBX explosive in the face of the larger shock wave array. And the result reveals that the relationship between Gruneisen coefficient Γ and body strain ξ is highly linear.