Damage Behavior of Multi-layer Spaced Target Plates Penetrated by Reactive Composite Jet

doi:10.12382/bgxb.2021.0755

Abstract

Abstract:

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.

Key words: multi-layer spaced target plates, shaped charge, reactive composite jet, reactive material double-layered liner, reactive material, damage behavior

CLC Number:

TJ410.3

WANG Haifu, HE Suo, CAI Yiqiang, XIANG Jing'an, SU Chenghai, GUO Huanguo. Damage Behavior of Multi-layer Spaced Target Plates Penetrated by Reactive Composite Jet[J]. Acta Armamentarii, 2023, 44(2): 325-333.

Figures/Tables 15

Fig.1 Samples of RM-DLL

Fig.2 Diagram of RM-DLL shaped charge

Fig.3 Experimental setup of RM-DLL shaped charge penetrating multi-spaced plates

Fig.4 Experimental results of reactive material-titanium jet penetrating multi-spaced plates

Fig.5 Experimental results of reactive material-copper jet penetrating multi-spaced plates

Table 1 Damage effects of steel plate and aluminum plates subjected to reactive material-titanium jet impact

Table 2 Damage effects of steel plate and aluminum plates subjected to reactive material-copper jet impact

Fig.6 Method for measuring penetration hole area on the spaced plates

Table 3 Measurement results of penetration hole areas on the steel plates and aluminum plates

复合射流	钢板及铝板上侵孔面积/mm²
复合射流	钢板	1号铝板	2号铝板	3号铝板	4号铝板	5号铝板
活性-钛射流	5145	42665	断裂	35059	断裂	3503
活性-铜射流	4691	41085	17266	11817	2807	890

Fig.7 Numerical simulations of reactive material-titanium composite jet penetrating multi-spaced plates

Fig.8 Numerical simulations of reactive material-copper composite jet penetrating multi-spaced plates

Fig.9 Equivalent deflagration pressure on the spaced Al plates

Table 4 Effective mass of the reactive materials and hole diameters caused by kinetic energy of the composite jets

活性复合射流	间隔靶序号	活性材料质量m_eff/g	动能侵孔 2a_i/mm
	1号铝板	17.8	29.0
	2号铝板	15.1	35.4
活性-钛复合射流	3号铝板	11.5	36.4
	4号铝板	6.0	28.2
	5号铝板	4.2	21.6
	1号铝板	12.3	28.2
	2号铝板	11.4	18.4
活性-铜复合射流	3号铝板	6.8	25.4
	4号铝板	2.3	20.2
	5号铝板	0.7	16.4

Fig.10 Fitted curve of variables X and S

Fig.11 Rupture areas induced by the coupling of kinetic and chemical energy of the composite jets

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