BFA Systems and ITT Corporation were awarded a Phase I effort for MDA07-20 to improve the existing BMDS hit-to-kill lethality predictive toolkit. Phase I efforts produced a prototype simulation call the Multiple Fragment Impact (MFI) code that predicts SDT response for cased high explosives as a function of the number, interstitial spacing (space and time), velocity, and obliquity of the striking fragment array as well as the target design and properties of all materials involved. Preliminary comparisons of MFI to CTH hydrocode during Phase I revealed similar critical velocity requirements for SDT response for two fragments impacting a cased high explosive target over a range of fragment masses and interstitial spacings. The objective of the Phase II proposal is to provide the MDA with the BFA/ITT team vision for enhancing, integrating, and validating the MFI simulation. Planned upgrades include the expansion of code capabilities to handle realistic payload geometries and configurations, additional fragment geometries (spheres, rod, and platelets), multiple explosive types, and run time enhancements. An interface with the MDA Core Lethality Model the Parametric Endo-Exoatmospheric Lethality Simulation (PEELS) will be developed. Additionally, ITT will oversee a limited test program designed to provide validation for the MFI code.
Keywords: Lethality, Fragment, Detonation, Hydrocode, Shock, Impact, Simulation, Synergy
