Bulletin of the American Physical Society
22nd Biennial Conference of the APS Topical Group on Shock Compression of Condensed Matter
Volume 67, Number 8
Monday–Friday, July 11–15, 2022; Anaheim, California
Session W04: Energetic Materials Behavior II
4:00 PM–5:30 PM,
Thursday, July 14, 2022
Anaheim Marriott
Room: Platinum 2
Chair: Joshua Felts, NSWC Crane
Abstract: W04.00004 : Numerical and Physical Experiments on Sugar Pearls as a Means of Studying Brittle Material Crushing and HE Pressing*
4:45 PM–5:00 PM
Presenter:
Duan Z Zhang
(Los Alamos National Laboratory)
Authors:
Duan Z Zhang
(Los Alamos National Laboratory)
Paul L Barclay
(Los Alamos National Laboratory)
Michelle A Espy
(Los Alamos Natl Lab)
Christina J Hanson
(Los Alamos National Laboratory)
Brian M Patterson
(Los Alamos National Laboratory)
Caitlin S Woznick
(Los Alamos National Laboratory)
Larry G Hill
(Los Alamos Natl Lab)
Sugar pearls are compacted both in numerical simulations and physical experiments. The numerical method used is the Dual Domain Material Point (DDMP) method. The method is chosen to accurately represent the complex pearl packings, large deformation of the pearls, and their breakage. The numerical results are compared to experimental results at the grain, meso, and macroscopic scales. At the grain scale, we compare the force displacement relations. At the meso scale, we compare pressing results of a few hundred pearls for their positions and damages obtained from the X-ray tomography of the samples. At the macroscopic level, we compare the density-pressure relations.
*The financial support is provided by Exascale Computing Program (ECP) and the Advanced Simulation and Computing (ASC) program under the auspices of the United States Department of Energy.
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