Experiment and numerical simulation of ceramic fragment penetrating titanium alloy thin targets

DOI:	10.11809/bqzbgcxb2023.08.004
Keywords:	ceramic fragment; titanium alloy; ballistic limit; numerical simulation
Abstract:	In order to study the penetration effect of non metallic ceramic fragments on titanium alloy thin targets, this paper studies the impact of fragment diameter and impact angle on the target plate failure form and ballistic limit by combining ballistic impact tests and finite element numerical simulation. The results show that, in the case of ballistic limit, the penetration patterns of ceramic fragments on titanium alloy thin targets are mainly divided into valve perforation and punching perforation. Among them, when the thickness of the titanium alloy target is 0.5 mm to 0.8 mm, the damage form of the target plate is mainly valve perforation. When the thickness of the target plate is 1.0 mm to 1.5 mm, the damage form of the target plate is in the coupling state of both valve perforation and punching perforation. When the thickness of the target plate is 2.0 mm, the damage form is punching perforation. With the increase of the fragment diameter, the ballistic limit (V 50 ) of the ceramic fragments to the target plate gradually decreases, and the disc shaped bulge caused by the back of the target plate is more obvious. At the same time, with the increase of the impact angle of the ceramic fragments, the V 50 penetrating the target plate also increases. When the impact angle is greater than 75°, the fragments jump. The research conclusions are of great significance for the power design of anti satellite weapon warheads.
Published:	2023-08-28
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