Simulation study on fragment characteristics of explosive bombs in a plateau environment

DOI:	10.11809/bqzbgcxb2023.08.025
Keywords:	mechanics of explosion; fragment velocity; fragment mass distribution; numerical simulation; plateau environment
Abstract:	In order to acquire the influence law of fragmentation generated from explosive bombs in a plateau environment, this paper selects typical explosive bombs, and determines the specific internal energy through the correction coefficient of air density changing with altitude and plateau air pressure. Then, the fragmentation process, fragmentation velocity and quality changes of the projectile in the plateau environment are simulated by using AUTODYN 3D combined with the Stochastic failure model. The results show that, compared with the plain environment, the difference of the fragment velocity distribution law formed by the explosive bombs in the plateau environment is small, the initial velocity of the fragments is basically the same, and the total amount of the fragments in the plateau environment increases slightly. In both the plateau and the plain environments, the number of the fragments decreases with the increase of fragment quality.
Issue:	Vol. 44 No. 8 (2023)
Published:	2023-08-28
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