Abstract

The prevention of accidental ignition in PBX is paramount for ensuring nuclear safety. A computational model, grounded in peridynamics(PD), has been employed to examine the dynamic damage response of PBX under varying conditions. The simulation outcomes suggest that the dynamic damage of PBX displays staged characteristics, attributable to the instability induced by stress wave reflection and damage accumulation. An increase in binder strength results in enhanced energy dissipation within the binder, consequently mitigating the overall damage to the PBX. Changes in microstructural parameters, specifically the specific surface area of the PBX, influence the fracture work required for interfacial debonding, thereby altering the damage characteristics of the PBX. This study enhances our understanding of the dynamic damage mechanisms of explosives by investigating the impact velocity and intrinsic parameters of the explosive.

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