Based on the mechanism of explosive reactive armor and concentrated energy jet,the interference effect of a new type of reactive armor on metal jets was studied.The comprehensive research was carried out by theoretical analysis,numerical simulation and experimental verification methods.The three-dimensional numerical simulation software ANSYS/LS-DYNA was used,and the control variable method was used to simulate the penetration of specific structural reactive armor under the conditions of different normal-angles.The penetration process was analyzed.The effective cutting length of the reactive armor on metal jet,the remaining penetration speed of metal jet,and the remaining penetration speed of metal jet under different normal angle conditions were obtained.The data on the variation of interference effects such as the movement speed of the reaction armor panel and backboard over time,can be used to observe the flight status of the reaction armor panel and backboard,as well as the jet shape after interference.Based on the obtained data,curve graphs and penetration results,combined with relevant interference theory,an analysis was conducted to obtain the variation patterns of interference parameters such as the effective interference length of the panel and backplate on the jet,the maximum velocity of the panel and backplate,and the remaining penetration velocity of the jet.Comparative analysis shows that as the normal angle increases,the effective interference length of the panel and backplate gradually increases.Under the normal angle of 70°,compared to the normal angle of 0°,the effective cutting length range of the backplate metal jet is increased by 368%.The residual penetration velocity of the jet decreases with the increase of the normal angle.When normal angle ranges from 50° to 70°,the residual penetration velocity of jet decreases the most.As the normal angle increases,the jet is more strongly affected by the interference of reactive armor.
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