Title: Computational Analysis and Design of Body Armor
Organization: Army High Performance Computing Research Center
Location: Minneapolis, MN
Background
Over the past 25 years researchers have been developing computer codes to aid in
the design and development of defense-related products, including armor systems. These
products are typically subjected to high-velocity impact and/or explosive detonation,
resulting in large material strains, high stain rates, high pressures and elevated
temperatures. The computer codes used for design and development utilize numerical
methods such as finite elements and finite differences. One of these codes is EPIC,
which uses finite elements and an explicit dynamic Lagrangian description of the
equations of motion for continua. A finite-element model of fabrics and composites was
recently developed for EPIC, with the purpose of analyzing the ballistic impact of body
armor. This EPIC model has been used in the design of body armor for the Army, which
seeks lighter and more effective protection for the soldier in the field.
Research Objective
The objective of this project will be to design body armor using EPIC
computations for analysis. Design options include the use of different fabrics, the
inclusion of resin to form composites, and the thickness/weight of the armor system. An
armor-piercing round traveling at muzzle velocity will provide the threat. Armor
materials will be limited to those characterized in the EPIC material library, including
several ballistic fabrics. A simple example of an EPIC computation that uses the fabric
model is shown in Figure 1, where a spherical steel round impacts and perforates a
Kevlar target.
Completion of this project will result in a better understanding of how computational
mechanics are used to investigate various design options in the development of a new
armor system. This project will also provide an increased awareness of the power of
high-performance computing.
Pre-requisites
The candidate for this project should have an interest in both computational
analysis and armor design/performance. Some knowledge of UNIX operating systems is
preferable.
Number of Academy Cadets/Midshipmen: 1-2
Requested duration: 3-4 weeks
Security Clearance required: none (NAC preferred)
Contact
Dr. Stephen Beissel
Phone: 612/337-3411
Email: sbeissel@ahpcrc.org
Figure 1. EPIC simulation of a steel sphere impacting and perforating a Kevlar fabric.