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DET has extensive experience in the application and development of
general-purpose and special-purpose computer codes to support our research and
development efforts.
We maintain an array of general-purpose physics-based computer codes for
predicting warhead performance and terminal ballistics, including:
- CTH, an multi-dimensional Eulerian hydrocode
- LS-DYNA, a multi-dimensional Lagrangian finite-element code
- ALE-3D, a three-dimensional arbitrary-Lagrangian-Eulerian hydrocode
- ANSYS, a structural and thermal analysis code
- EPIC, a multi-dimensional Lagrangian finite-element code
Several in-house Beowulf computer clusters provide us with the computational
power to perform complex analyses in a timely manner.
We have also developed and continue to use several special-purpose computer
codes, which are listed among our Engineering Products.
Key Benefits
- Our broad array of codes means we can apply the right tool to the job.
- Our depth of experience with each code insures its proper application.
- Most often, we can perform several levels of analysis—simple
model or equation, one-dimensional or analytical code, and multi-dimensional code—for
predictions with confidence.
Capabilities
Computations are a valuable tool in just about everything we do, including:
- Warhead Design
- We are able to bring to bear an array of analytical tools for predicting
warhead performance, including shaped charges, explosively formed
penetrators, fragment warheads, and underwater warheads.
- Computer Code Development
- We have developed a suite of computer tools
that we continue to use in our R&D efforts. When needed, we have modified
or contributed to the development of general-purpose codes.
- Thermo-Structural Analysis
- We are able to analyze the equilibrium and dynamic response of
structures to stresses and thermal loads.
Example Analyses
The breadth of our experience is illustrated by a list of recent analyses:
- Non-eroding Rocket Nozzle Thermomechanical Analysis
- ANSYS computations of thermomechanical response supported our design of
a composite non-eroding rocket nozzle made of carbon lined with rhenium (a
refractory metal).
- Underwater Explosions
- We were able to assess the impact on performance of a torpedo warhead of
replacing its explosive fill by a modern insensitive formulation. The
agreement among semi-empirical equations, a classical one-degree-of-freedom
dynamical model, and multi-dimensional hydrocode (CTH) simulations provided
confidence in our assessment.
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DE
Technologies, Inc.
