Abstract
This paper studies the influence of fuel tank and fuel on the distribution density and fragmentation velocity of the fragment in the missile fuel tank by LS-DYNA numerical simulation and analysis. The analysis of simulation results show that the peak value of fragment number in full oil state changes from near the upper and lower sides in no oil state to near the horizontal direction, the peak number of fragments can be increased by about 9%, and the velocity difference of fragments between the no oil and full oil condition increases with the increase of the oil layer thickness, the maximum velocity difference of fragments is 451.8 m/s. The eccentric placement of warhead and thickness of fuel tanks also affects the velocity of fragments. The simulation results are basically consistent with the experimental results. It provides a theoretical reference for the design and power evaluation of the fuel tank fragment warhead.
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