Numerical Analysis of the Ballistic Impact of Tungsten-Based Penetrators on Hot-Pressed Boron Carbide Targets

Report No. ARL-TR-6623
Authors: Constantine G. Fountzoulas; Jerry C. LaSalvia
Date/Pages: September 2013; 20 pages
Abstract: Advances in the numerical techniques and materials models have resulted not only in improved simulation tools for ballistic impact into single and multilayer armor configurations but also have contributed in the understanding of the physics involved. However, the ability of a numerical model to realistically predict the response of ceramic armor to ballistic impact depends mainly on the selection of appropriate material models and availability of appropriate data. In a presentation titled Ballistic Impact Damage in Hot-Pressed Boron Carbide, LaSalvia and coauthors experimentally studied the interaction of confined hot-pressed boron carbide (B4C) targets impacted by laboratory-scale tungsten-based long-rod penetrators at velocities between 819 and 1205 m/s. An initial study of the ability of the existing material models to predict the observed damage induced by 93% tungsten heavy alloy (WHA) cylindrical projectiles striking confined cylinders of hot-pressed B4C at velocities between 819 and 1205 m/s was performed. It was determined that the damage patterns were highly dependent on the properties of the confined ceramic and the impacting cylinder, whose failure behavior was difficult to model, and the strength and failure of material models used for the modeling. This report details the results of parametric studies conducted of various model parameters in an attempt to accurately simulate the ballistic response of confined hot-pressed B4C targets.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2013