Numerical simulation study on the characteristics of supercharged jet forming

DOI:	10.11809/bqzbgcxb2024.07.034
Keywords:	shaped charge jet; super shaped charge jet; liner; numerical simulation; LS DYNA
Abstract:	In order to study the forming law of ultra high energy jet, numerical simulations were conducted using LS DYNA software on the jet forming process under different types of propellant cover structures. The forming speed, Elongation performance, and distribution law of micro element kinetic energy of propellant cover were compared and analyzed between ultra high energy jet and concentrated energy jet. The results showed that both the shaped charge cover and the super shaped charge cover were formed by continuously squeezing the inner surface of the charge cover towards the middle. The jet formed by the super shaped charge cover had better extensibility and jet head velocity, but the jet head velocity significantly decreased by about 5.8% after the initial formation of the super shaped charge cover. Compared to the conical shaped charge cover, the improved ultra shaped charge cover has an improved extension performance of about 60.6% and an increased jet head velocity of about 29.2%. During the jet forming process of the super concentrated energy propellant cover, the kinetic energy of the auxiliary propellant cover is the smallest, while the kinetic energy of the jet formed in the middle and lower parts of the inner surface of the main propellant cover is the largest.
Published:	2024-07-26
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