Abstract
The analysis of simulation results and the verification against experimental
data is essential to develop and interpret simulation models for impact damage.
We present two visualization techniques to post-process particle-based
simulation data, and we highlight new aspects for the quantitative comparison
with experimental data. As the underlying simulation model we consider the
particle method Peridynamics, a non-local generalization of continuum
mechanics. The first analysis technique is an extended component labeling
algorithm to extract the fragment size and the corresponding histograms. The
distribution of the fragment size can be obtained by real-world experiments as
demonstrated in Schram and Meyer (Simulating the formation and evolution of
behind armor debris fields. ARL-RP 109, U.S. Army Research Laboratory, 2005),
Vogler et al. (Int J Impact Eng 29:735-746, 2003). The second approach focuses
on the visualization of the stress after an impact. Here, the particle-based
data is re-sampled and rendered with standard volume rendering techniques to
address the interference pattern of the stress wave after reflection at the
boundary. For the extraction and visual analysis, we used the widely-used
Stanford bunny as a complex geometry. For a quantitative study with a simple
geometry, the edge-on impact experiment (Schradin, Scripts German Acad Aeronaut
Res 40:21-68, 1939; Strassburger, Int J Appl Ceram Technol 1:1:235-242, 2004;
Kawai et al., Procedia Eng 103:287-293, 2015) can be applied. With these new
visualization approaches, new insights for the quantitative comparison of
fragmentation and wave propagation become intuitively accessible.
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