Alternative Material for High-Speed Projectile Casing
Technical Report,01 Sep 2018,26 Mar 2020
AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH WRIGHT-PATTERSON AFB United States
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A high-speed projectile impact is a highly complex dynamic problem that can be simplified with the use of finite element analysis solvers. AbaqusExplicit was used to evaluate the impact of various projectiles using a plane strain setup. Using a baseline stainless steel projectile, the proposed sandwich construction design was analyzed for competition with the baseline. The overall goal was to explore the use of a new casing design and if it could perform similarly to the baseline projectile. The sandwich construction used stainless steel, tungsten, and silicon-carbide reinforced aluminum as outer and inner shell materials. The core material was created using additive manufacturing of inconel 718. The inconel 718 core used a triply periodic minimal surface structure manufactured to provide the projectile casing with high stiffness and strength while reducing the volume of material used to manufacture it. A monolithic concrete target using a brittle cracking model for a projectile hitting a concrete wall in order to simulate a projectile impacting a bunker, road, or other concrete structure.
- Ammunition and Explosives
- Properties of Metals and Alloys