Study On The Damage Effectiveness Of Energy-containing Fragments Penetrating A Target Plate Through Combustion

Since the discovery of energy-containing fragments,in addition to the kinetic energy penetration performance of conventional inert fragments,it can also be able to kinetic energy destruction and arson destruction of flammable materials,electronic equipment,fuel tanks,personnel and other targets behind the target after penetrating the target plate.Energycontaining fragments have obvious advantages over inert fragments,which can be widely used in anti-explosive bombs and precision-guided weapons to kill and destroy local targets,personnel,materials and other targets with arson.Therefore,energy-containing breakers are of great relevance in terms of military combat requirements and future weapons development.At present,the publicly reported research on the target arson damage after the impact of energycontaining fragments on the target mainly focuses on the study of the target rear tank,but there is less research on the target rear fragmentation cloud fireball particle dispersion after the impact of energy-containing fragments on the target plate.In this paper,by consulting the domestic and foreign literature,through the process of impact temperature rise Hugoniot theory of the broken piece impacting the target plate and based on Mc Queen impact temperature rise calculation method and its thermal destruction mode of learning.Then,taking the tungsten pick alloy energy-containing broken piece as an example,the static compression test was carried out by using an Instron 8801 and SHPB device obtain the mechanical property parameters of the tungsten pick alloy energy-containing material,and the John-Cook principal structure relationship was obtained by processing the test data.And based on LS-DYNA software FEM-SPH algorithm,the numerical simulation of?11×13mm W-Zr alloy energy-containing fragmentation at 90°,60° and 30° of the bullet eye angle,the simulation of the fragmentation cloud fireball particle cloud distribution after impacting the 10 mm thick 2A12 aluminum target,and obtain the numerical simulation limit penetration velocity of 534 m/s,593 m/s and 987 m/s at 90°,60° and 30° of the bullet eye angle,respectively.Finally,with reference to the numerical simulation results,the test data of the ultimate penetration velocity,the breakage cloud and the spatial distribution characteristics of the temperature field after the target plate were obtained for the impact of the W-Zr alloy energy-containing breakers on the 10 mm thick 2A12 aluminum target at the bullet eye angle of 90°,60° and 30°,and the experimental results were consistent with the numerical simulation results.In addition,a W-Zr alloy pick containing energy breakers were also carried out to test the arson damage to the post-target skimmer and diesel tank at a bullet angle of 90°.The results showed that the ?11×13mm tungsten pick alloy with energy breakers could not ignite the posttarget skimmer,but could ignite the post-target diesel tank,of which the ignition speed threshold was 1064 m/s.