In this paper an OG-7 warhead was modeled using Autodyn SPH solver. The results were compared with the pit test and analyzed by Held’s formula for fragments mass distribution. The results of Autodyn SPH showed good agreement considering of the effects of the mass losses and fragments impact during the pit test.
In this work two models were created to verify the possibility of using Autodyn SPH 3D instead of costly pit tests. First model represents fragmenting of OG-7 warhead surrounded by 25 mm of sand to simulate partially a pit test for fragments recovery. The second model represents fragmenting of free OG-7 which was created to find out the effect of sand in fragments formation. The simulation results were compared with an experimental cubic pit test results. The experimental and simulation results were analyzed by Held's formula for fragments mass distribution.
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