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 Y02: Characterization of Reactive and Energetic Materials I
9:15 AM–10:45 AM,
Friday, July 15, 2022
Anaheim Marriott
Room: Platinum 6
Chair: Alexandra Reinert, NSWC Crane
Abstract: Y02.00006 : Effect of combined pressure-shear loading on explosives*
10:30 AM–10:45 AM
Presenter:
John E Reaugh
(Lawrence Livermore Natl Lab)
Authors:
John E Reaugh
(Lawrence Livermore Natl Lab)
Bradley W White
(Lawrence Livermore Natl Lab)
We have used results from the Steven test [1] to explore explosive ignition due to shear localization and performed accompanying HERMES model (High Explosive Response to MEchanical Stimulus) [2] calculations. We observed shear localizations, which are candidate ignition sites. At those sites, the three principal stresses are unequal and approach pure shear, even with the extended Von Mises model, for which the equivalent strength in pure shear is the same as pure compression. We also used a Mohr-Coulomb model, where the shear strength is about 75% of the compressive strength. In these latter calculations, shear localized in rays emanating from the impact zone.
1. S. K. Chidester et al. Proceedings, 11th Int. Det. Sym., Snowmass Village, CO, 1998, 93.
2. J. E. Reaugh et al., Propellants Explos. Pyrotech. 2018, 43, 703.
*JER's and BWW's work performed under the auspices of the United States Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. LLNL-ABS-832600
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