Analysis on the Effect Factors and Rules for Dynamic Ultra-high Pressure of Projectile Impacting Target Plate

The present theory of projectile impacted target plate to generate dynamic ultra-high pressure couldn't describe qualitatively the effects of body length diameter ratio, body head shape, size, thickness and shape on the impact results, using the method of numerical simulation, to study the influence of speed, elastomer material density, length diameter ratio, the shape of the head and the target thickness, material density, shape, size and other factors based on the software of ANSYS/LS-DYNA. By comparing the simulation results of the models, obtained the influence law of each factor influencing the dynamic impact of the ultra high pressure, the ratio of length to diameter is larger, smaller pressure, flat nosed projectile impact pressure maximum, round, flat minimum transition time, and the thickness, size and shape of target plate has no effect on the impact pressure. And verify the qualitative description of influence of density of existing materials dynamics theory, the density of projectile material velocity and target material on the dynamic impact of the ultra high pressure, shell material with higher density, projectile velocity increasing, the target material density is bigger, the peak pressure generated more big, provides theoretical support for the further study of the dynamic loading method of ultra high pressure.