Abstract
By LS-DYNA hydrocode, the EFP (Explosively Formed Projectile) forming characteristics of tantalum tungsten alloy are simulated. The EFP forming characteristics of tantalum tungsten alloy with different W contents under typical charge structure are obtained. The curvature range of the liner required for forming solid rod shaped EFP with large aspect ratio is determined, and the influence of tantalum tungsten alloy material’s constitution parameters on EFP forming is analyzed. The forming patterns of tantalum tungsten EFP with different tungsten contents are similar, but the range of outer curvature required for forming a solid EFP is different. The research results can provide references for EFP design and lay foundation for the application of high density tantalum tungsten alloy in the intelligent and smart ammunition.
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