Study On Explosion Pressure Of Emulsion Explosive At Typical Solid Metal Contact Surface

There is a strong engineering application background in the study of explosive pressure on typical solid metal contact surfaces.Typical solid metals such as copper,steel,and aluminum are the most important metal materials,which are used in defense and military industries such as weapons and ammunition,tanks and warships,as well as engineering materials,automotive raw materials,and other livelihood industries.The explosion pressure of emulsion explosives contacting on typical metal medium was investigated through theoretical researched,numerical simulation,and experimental measurement of the explosion pressure on typical metal medium contact surfaces,explored the explosion effect of emulsion explosives on different metal media.These were closely related to the direct effect of explosive explosion on metal,rock and other solid media,the armor breaking effect of high-speed metal jet formed by shaped charge explosion,the armor breaking effect of armor breaking bomb explosion,and the collision of high-speed objects.They could provide basic parameters and scientific basis for the design of gun hole parameters,explosive welding parameters,weapon projectile design,ship tank protective armor design,etc.This article explored the explosive pressure characteristics of emulsion explosives acting on the contact surface of solid metal media through a combination of theoretical research,numerical simulation research,experimental research,and obtains the following conclusions:(1)Using stress wave theory and detonation impact theory,the explosion pressure of emulsion explosives acting on the interface of copper,steel,and aluminum was calculated.The explosion pressure on the surface of the copper target plate,P_C was 6.58GPa,the explosion pressure on the surface of the steel target plate,P_Swas 6.50 GPa,and the explosion pressure on the surface of the aluminum target plate,P_A was 5.70 GPa.By analyzing and comparing the calculated explosion pressure values,it can be concluded that the theoretical calculation value of stress wave is less than the theoretical calculation value of detonation shock wave;Explosion pressure at the interface of copper metal medium>explosion pressure at the interface of steel metal medium>explosion pressure at the interface of aluminum metal medium;The higher the density of the metal medium,the greater the explosion pressure at the interface of the metal medium;The greater the wave impedance of the metal medium,the greater the explosion pressure at the interface of the metal medium;The greater the density difference between metal media,the greater the explosion pressure difference between metal interfaces;The larger the difference in wave impedance between metal media,the greater the difference in explosion pressure between metal interfaces.(2)Using AUTODYN software to simulate the explosion of emulsion explosives on copper,aluminum,and steel target plates,observe the propagation of detonation waves,changes in explosion pressure at the interface of metal target plates,and the destructive effect of metal target plates.The peak pressure of emulsion explosives during copper target plate explosion was 15.4 GPa,steel target plate explosion was 14.96 GPa,and aluminum target plate explosion was 9.6 GPa.It was found that the closer the interface of the metal target plate approaches the center point of the emulsion explosive,the higher the explosive pressure it bears.Analyze the curve of the explosion pressure change at the interface of the metal target plate,which is basically consistent with the law calculated by the explosion pressure theory.Numerical simulation of peak pressure at the interface between emulsion explosives and metal target plates>theoretical calculation of detonation shock waves>theoretical calculation of stress waves.(3)Based on the dynamic pressure testing theory of manganese copper piezoresistive method,a testing system for interface explosion pressure is designed and applied.The explosion pressure values of emulsion explosives at the interface of steel,aluminum,and copper were measured,and the interface pressure of the steel target plate was 6.90 GPa,the interface pressure of the aluminum target plate was 6.12 GPa,and the interface pressure of the copper target plate was 7.14 GPa.The explosion pressure at the metal interface measured through analysis experiments conforms to the law of theoretical calculation values.Comparing the measured pressure at the interface of the metal target with the theoretical calculation values of stress waves and detonation impact,it was found that the theoretical calculation values of detonation impact are closer to the measured pressure.This article explores the theoretical calculation method,numerical simulation method,and manganese copper pressure resistance method used for the explosion pressure of emulsion explosives acting on the contact surface of solid metal media.This has practical guiding significance for relevant theories and engineering applications,and has certain academic value for deepening the understanding and understanding of the interaction theory between explosive explosion and solid media.Figure 34 table 2 reference 95...