Effects of Components and Relative Density on the Mechanical Properties of Aluminized Explosive at High Strain-Rate

摘要

Investigations on dynamic compression response of pressed aluminized explosion are presented. Compressive Split Hopkinson Pressure Bar (SHPB) apparatus was used for the experimental investigations. The effects of components and relative density are considered. During SHPB testing of the specimens, it was observed that the failure stress is increased with the increasing of aluminum content. Granularity of aluminum has an influence on strength of aluminized explosive. Decreasing the particle size and reasonable grain gradation can enhance the compression strength. There are little differences among the mechanical response of explosives with four types of binder. But when the plasticizer is added, the strength is changed. The effects of relative density on the strength are obvious. There is an optimal relative density at which the failure stress of aluminized explosive reaches the maximum.