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Title: Experimental and numerical investigations of beryllium strength models using the Rayleigh-Taylor instability

A recent collaboration between LLNL and VNIIEF has produced a set of high explosive driven Rayleigh-Taylor strength data for beryllium. Design simulations using legacy strength models from Steinberg-Lund and Preston-Tonks-Wallace (PTW) suggested an optimal design that would delineate between not just different strength models, but different parameters sets of the PTW model. Application of the models to the post-shot results, however, shows close to classical growth. We characterize the material properties of the beryllium tested in the experiments. We also discuss recent efforts to simulate the data using the legacy strength models as well as the more recent RING relaxation model developed at VNIIEF. Finally, we present shock and ramp-loading recovery experiments conducted as part of the collaboration.
Authors:
ORCiD logo [1] ;  [2] ; ORCiD logo [2] ;  [3] ;  [3] ;  [3] ;  [2] ;  [2] ;  [2] ;  [2] ;  [1] ;  [2]
  1. Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
  2. Lawrence Livermore National Laboratory Livermore, California 94551-0808, USA
  3. Russian Federal Nuclear Center-VNIIEF, Sarov 607188, Russia
Publication Date:
OSTI Identifier:
1225683
Report Number(s):
LLNL-JRNL--662759
Journal ID: ISSN 0021-8979; JAPIAU
DOE Contract Number:
AC52-07NA27344
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 22
Publisher:
American Institute of Physics (AIP)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY