Numerical simulation and experimental research on jetting projectile charge penetrating 45 steel target

DOI:	10.11809/bqzbgcxb2023.08.021
Keywords:	jetting projectile charge; liner; numerical simulation; static penetrating armor; explosive mechanics
Abstract:	The damage effect of jetting projectile charge is closely related to the penetration depth and the penetration aperture. In order to solve the problem of reducing the after effect damage caused by large penetration depth and small aperture, this paper uses LS DYNA to numerically simulate the warhead power. The wall thickness and height of the liner are used as the main variables for the first optimization of the structure of the shaped charge warhead, and an optimal piercing depth and aperture matching scheme is selected by considering the typical armor target self protection capability. A second optimization based on the first optimal scheme is obtained, and an optimization scheme of an equal wall thickness sphere deficient purple copper liner is obtained. Then, static explosion tests are executed to verify the simulation accuracy of the final optimization scheme. The results show that the penetration depth of the jetting projectile charge penetrator in the final optimized scheme against 45 steel is 121 mm, the entry hole diameter is 26.3 mm, and the exit hole diameter is 21.8 mm. The after effect targets are seriously destroyed, and the jetting projectile charge penetrator and secondary fragments of the targets can ignite inflammable materials like diesel fuel boxes, wooden boxes and quilts, which shows the error of the numerical simulation results and the static explosion tests is small. The research method and conclusion in this paper can provide reference for the structural design and optimization of shaped jetting projectile charge warheads.
Published:	2023-08-28
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