Effectiveness Evaluation Of The Effect Of Explosive Reaction Armor On Shaped Jet Interference

With the rapid development of national defense technology,armor protection technology has also made great progress.Armor protection technology has experienced the development process from homogeneous armor to composite armor to explosive reaction armor.Explosive reaction armor has been considered as one of the most effective protective measures for tanks and armored vehicles since its invention.The effectiveness of explosion reaction armor by shaped jet as an important means of measuring armor protection technology,However,there is no systematic report in the existing literature.This topic is based on this background,it is proposed to put forward a theoretical study on the evaluation of the effectiveness of the explosive reaction armor.It mainly includes protection effectiveness evaluation for single-layer explosive reaction armor and double-layer parallel explosive reaction armor.In order to achieve efficiency evaluation of various structural parameters of explosive reaction armor,and it has certain guiding significance for the future proposal of new structure explosion reaction armor.The research method of this paper uses a combination of theoretical analysis,numerical simulation,and experimental verification.Firstly,A theoretical model for evaluating the effectiveness of single-layer explosive reaction armor on the shaped charge jet is proposed.Secondly,based on the theory of single-layer explosion reaction armor effectiveness evaluation,the effectiveness evaluation theory of double-layer parallel reaction armor on jet interference is proposed.The metlab program was compiled according to the effectiveness evaluation theory.Again,the simulation model was established by using 3D finite element analysis software?ANSYS/LS-DYNA?to simulate the protective performance of some structural parameters of single-layer and double-layer parallel explosion reaction armor.And the theoretical calculation results are compared with the simulation results.Finally,the experiment was designed by selecting some structural parameters,and the theoretical calculation results and simulation results of the effectiveness evaluation were verified.The research shows that:Comparative analysis of numerical simulation results and performance evaluation results,the relative deviation between the theoretical calculated value and the simulated value does not exceed 10%and meet the requirements of engineering calculations.Explain that the theoretical model of the explosive reaction armor effectiveness evaluation is more accurate.At the same time,the experiment was designed.By comparing the experimental results with the numerical simulation results and the performance evaluation results,it was found that the three were in good agreement and the relative deviation was small.Explain that the efficiency evaluation theory of the explosive reaction armor on the jet interference effect is more accurate.The effectiveness evaluation theory covers the main factors affecting the effectiveness of the explosive reaction armor protection.The effectiveness evaluation theory proposed in this paper covers the size effect?L,W?,the dip effect???,the gap effect??35?h?,the thickness effect?h?,and the material effect that affect the effectiveness of the explosive reaction armor protection???,the detonation pressure of the interlayer explosive(P_CJ),the distance of the reaction armor from the main armor?Z₀?,etc.Evaluate the quality and space effectiveness of explosive reaction armor,Effectiveness evaluation of structural parameters such as thickness/size,material,normal angle and distance between explosive reaction armor and main armor.At the same time,the metlab program can be programmed to simplify the evaluation of the effectiveness of the explosion armor protection.