Numerical simulation on arc generatrix Cone cover forming of shaped jet

Based on the finite element method, central difference software LS-DYNA-970 platform, this paper using the Euler algorithm, simulation of the 3D jet forming. Study on the uniform thickness of curved cone shaped cover is being executed, reveal the metal forming mechanism of various arc radius curved generatrix covers and detailed study the speed distribution in all parts of the formed jet penetrator. Studies have shown that: Under the same premise of drug cover in caliber and cone height, the jet formed by arc generatrix shaped cover inward opening can have a more uniform mass distribution, and can effectively inhibition of the production of metal fracture in jet head, but the speed of jet head is more decreased when compared with the model that arc generatrix open outside. Such laws is more obviously as the generatrix radius become less and less. The results matches the experimental results agree well.