Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Extraction of Fragments and Waves After Impact Damage in ParticleBased Simulations
 Griebel, Michael; Schweitzer, Marc Alexander: Meshfree Methods for Partial Differential Equations VIII Cham: Springer International Publishing, 2017 (Lecture notes in computational science and engineering 115) ISBN: 3319519530 ISBN: 9783319519531 ISBN: 9783319519548 pp.1734 
 International Workshop on Meshfree Methods for Partial Differential Equations <8, 2015, Bonn> 

 English 
 Conference Paper, Electronic Publication 
 Fraunhofer SCAI () 
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 postprocess particlebased 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 nonlocal 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 realworld experiments as demonstrated in Schram and Meyer (Simulating the formation and evolution of behind armor debris fields. ARLRP 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 particlebased data is resampled 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 widelyused Stanford bunny as a complex geometry. For a quantitative study with a simple geometry, the edgeon 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.