活性复合射流侵彻多层间隔靶毁伤行为

To study the behind-target damage effects of the reactive material double-layered liner (RM-DLL) shaped charge penetrating into the target plates, the penetration and deflagration behaviors of the composite jet impacting multi-layer spaced target are studied. The experiments, numerical simulations and theoretical analysis are used to investigate damage behaviors and mechanism of the reactive composite jet against multi-spaced target plates. The experimental results show that for a given RM-DLL shaped charge structure, comparing with the reactive material-copper jet, the reactive material-titanium jet produces a larger penetration hole in the steel ingot and causes serious deformation and even rupture to the spaced aluminum plates. Based on the combined damage behaviors, an analysis model of the rupture area on the spaced aluminum plates is established. The model shows that the rupture area is positively correlated with the effective mass of follow-thru reactive material and the hole-radius formed by the jet kinetic energy, and that the reactive material’s effective mass has a more significant effect on the area. Based on the empirical parameters obtained from the experiments and numerical simulations, the model can further predict the rupture area of the aluminum plates under different reactive materials’ effective mass, penetration holes formed by kinetic energy, and the plate thicknesses.