In response to the efficient destruction of top armor for tanks clad in explosive reactive armor penetrated by shaped charge jet,a new combination-filling liner structure was proposed.Numerical simulation of the jet formation and penetration process of the target board was carried out using nonlinear dynamics analysis software AUTODYN-2D,the effects of filling material and detonation method on jet forming as well as the effect of burst height on penetration performance were also analyzed.The results show that:the proposed combination-filling liner can form a two-stage tandem jet with the first and the last connected to each other,injection molding is more effective when aluminum and Teflon are used as fillers,but aluminum molding is more stable;Point plus ring detonation improves front-stage jet by 67.06%and rear-stage jet by 29.51%as compared to single point detonation.In the burst height interval of 2～6 CD(charge diameter),the shaped jets can all penetrate the top armor of tanks clad with explosive reactive armor,and maintain a certain residual velocity,and the optimum burst height is 5 CD.This study has reference significance for the design of a new structural liner for penetrating the top armor of tanks clad in explosive reactive armor.
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