Author(s): E. L. Baker, D. Pfau, J. M. Pincay, T. Vuong & K. W. Ng
A variety of mesh reduction methodologies (MRM) have been developed for use in high rate continuum modeling.
An adaptive mesh refinement (AMR)
technique has been implemented for use in the CTH high rate Eulerian finite
This new implementation allows increased rectilinear mesh
refinement in localized areas of interest.
We have applied this AMR to
successfully resolve dominating physical phenomena involved in concrete wall
impact modeling, as well as physical phenomena observed at the material
interface of explosively welded metals.
In addition, a variety of MRM relaxation
algorithms have been developed for high rate continuum Arbitrary
Lagrangian-Eulerian (ALE) modeling.
These relaxation algorithms are now
routinely used to provide the high resolution simulation of explosively produced
metal jetting using the CALE computer program.
Finally, a multi-mesh MRM
technique has been implemented in the ALE-3D computer model.
technique has been used to provide the modeling of fragment impact for the
development of safer munitions.
These new MRM techniques are now allowing
the high rate continuum modeling of physical phenomena that was not
mesh reduction methodologies, high rate continuum modeling,
impact physics, high explosives.
High rate continuum modeling is used for the modeling of high rate events
including high explosive detonation and high velocity impact.
typically provide explicit second order integration in time and space of the
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Paper DOI: 10.2495/BEM060121
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