High Rate Continuum Modeling Mesh Reduction
Methodologies And Advanced Applications
Author(s)
E. L. Baker, D. Pfau, J. M. Pincay, T. Vuong & K. W. Ng
Abstract
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
difference model. 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. This MRM
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
previously simulated.
Keywords: mesh reduction methodologies, high rate continuum modeling,
impact physics, high explosives.
1 Introduction
High rate continuum modeling is used for the modeling of high rate events
including high explosive detonation and high velocity impact. These models
typically provide explicit second order integration in time and space of the
Keywords
mesh reduction methodologies, high rate continuum modeling,
impact physics, high explosives.
Related Book
Other papers in this volume
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