Simulation analysis of launch stability of in bore charge at high speed

DOI:	10.11809/bqzbgcxb2024.12.029
Keywords:	EFP; nickel alloy; penetration performance; aftereffect target; numerical simulation
Abstract:	In order to explore the power performance of the new nickel alloy EFP, this paper studies the forming process of nickel alloy EFP under the two forming methods of backward turning and forward pressing. Based on the backward turning EFP structure with better penetration power, the influence of curvature radius, wall thickness, penetration speed and target thickness on penetration power is analyzed. It is found that with the increase of the outer radius of curvature, the penetration depth increases first and then decreases, and the pore size decreases first and then increases. With the increase of the thickness of the liner, the penetration depth of the target increases first and then decreases, and the aperture increases gradually. With the increase of penetration speed, the penetration depth of nickel alloy EFP to semi infinite target plate increases first and then decreases, the pore size increases gradually, and the effective damage area of the aftereffect target after penetrating the thin target increases gradually. As the thickness of the target plate increases, the effective damage area of the nickel alloy EFP to the aftereffect target gradually decreases. The experimental results are in good agreement with the simulation results. The research conclusions can provide key technical reference for the structural design of EFP warhead.
Issue:	Vol. 45 No. 12 (2024)
Published:	2024-12-30
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