The Low Collateral Damage Characterization Of CFRP Shell Structure With Heavy Mental Powder Embedded As A Layer Under Implosion

In the modern and future wars, hit the target accurately, effectively control therange and extent of the injury and minimize the collateral damage effect have becomeoperational requirements under some certain circumstances. Hence there is a need todesign a low collateral damage ammunition. The research object of this paper is astatic explosion model composed of the CFRP shell with heavy mental powderembedded as a layer. And the paper focus on the scattering properties of heavy metalpowder driven by explosion, low collateral damage characterization of the staticexplosion model, standard of low collateral damage and other scientific issues.Researches have been conducted by means of theoretical analysis, numericalsimulation, experimental research and so on. The specific works and conclusions areas follows.A theoretical analysis about the kill element made of heavy metal particles andthe speed variation in the medium has been conducted for the physical process of theheavy metal powder dispersion driven by explosion. On the basis of this, we proposeda characterization method of the impulse under the coupling effect of overpressureand heavy metal particles for the standard of the low collateral damage of warhead. Inaddition, the analysis of the damage of persons and buildings caused by the lowcollateral damage warhead has also given by this paper.The ground static blast experiment has been carried out of the CFRP shell modelwith heavy mental powder embedded as a layer under packing mode. By comparingdifferent warhead models’ DPR overpressure test results, we can obtain the effect ofdifferent shell and different particle size on the near field overpressure after theexplosion. The low collateral damage properties of the low collateral damage warheadmodel we designed can be verified based on the results of the effectors and the resultsachieved by high-speed video. A high speed impact test that drive the tungsten alloyparticles has been carried out based on the plasma drive tiny fragments accelerator.From this test, we can obtain the empirical formulas of the penetration properties oftungsten alloy particles penetrate ballistic soap and LY12hard aluminum underdifferent particle size and different hit velocity, and thus conversely get the field testresults, which provide the evidence to evaluate the propertied of low collateraldamage.Combining theoretical analysis and experimental research, we can obaina equivalent simplified structural model of the CFRP shell warhead with heavy mentalpowder embedded as a layer. And we also compared the influence law of differentcharge conditions on the particles, explosion products and shockwavefront duration relationships during the detonation driven process using atwo-dimensional numerical simulation procedures and post-processing softwareTecplot on the basis of Visual C++language.In this paper, the particle scattering properties of CFRP shell with heavy mentalpowder embedded as a layer driven by explosion have been analyzed. And acharacterization method of the impulse under the coupling effect of overpressure andheavy metal particles and the damage standard of persons and buildings have alsobeen discussed. Then the influence law of different charge conditions on the particles,explosion products and shockwave front duration relationships has been compared tolay a foundation for the follow-up researches of low collateral damage characteristics.