Interpreting Experimental Results from Shock Impacts on Single Crystal PETN in the Context of Continuum Models
Abstract
Here we interpret previous experimental measurements of impacts on single crystal PETN in the context of a simple continuum model. Hugoniot calculations using the simple model framework under various limiting assumptions envelope measured Hugoniot states reasonably well and suggest that non-negligible deviatoric elastic strains may exist in the shock compressed state for weak impacts. An accompanying simple kinematic model for lattice deformation was used to estimate the expected shifts in X-ray diffraction peaks for the (211) plane under impacts normal to (110) planes. The results suggest that negligible relaxation of the deviatoric lattice deformation occurs on the short (10–20 ns) time and wave propagation (40–80 m) scales of laser-driven shock experiments, and that the corresponding elastic strains may be large. Because of the potentially large deviatoric elastic strains, the specific finite deformation strain measure used within thermomechanical single crystal models is of significant consequence, which is explored numerically by the comparison of isothermal purely elastic responses under uniaxial and simple shear deformations.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1660595
- Alternate Identifier(s):
- OSTI ID: 1575965; OSTI ID: 1581277
- Report Number(s):
- LA-UR-19-26192; LA-UR-19-26299
Journal ID: ISSN 0721-3115
- Grant/Contract Number:
- 89233218CNA000001
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Propellants, Explosives, Pyrotechnics
- Additional Journal Information:
- Journal Volume: 45; Journal Issue: 2; Journal ID: ISSN 0721-3115
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; PETN; anisotropy; single crystal; continuum model; impact
Citation Formats
Luscher, Darby Jon, Cawkwell, Marc Jon, Ramos, Kyle James, Sandberg, Richard L., and Bolme, Cynthia Anne. Interpreting Experimental Results from Shock Impacts on Single Crystal PETN in the Context of Continuum Models. United States: N. p., 2019.
Web. doi:10.1002/prep.201900228.
Luscher, Darby Jon, Cawkwell, Marc Jon, Ramos, Kyle James, Sandberg, Richard L., & Bolme, Cynthia Anne. Interpreting Experimental Results from Shock Impacts on Single Crystal PETN in the Context of Continuum Models. United States. https://doi.org/10.1002/prep.201900228
Luscher, Darby Jon, Cawkwell, Marc Jon, Ramos, Kyle James, Sandberg, Richard L., and Bolme, Cynthia Anne. Wed .
"Interpreting Experimental Results from Shock Impacts on Single Crystal PETN in the Context of Continuum Models". United States. https://doi.org/10.1002/prep.201900228. https://www.osti.gov/servlets/purl/1660595.
@article{osti_1660595,
title = {Interpreting Experimental Results from Shock Impacts on Single Crystal PETN in the Context of Continuum Models},
author = {Luscher, Darby Jon and Cawkwell, Marc Jon and Ramos, Kyle James and Sandberg, Richard L. and Bolme, Cynthia Anne},
abstractNote = {Here we interpret previous experimental measurements of impacts on single crystal PETN in the context of a simple continuum model. Hugoniot calculations using the simple model framework under various limiting assumptions envelope measured Hugoniot states reasonably well and suggest that non-negligible deviatoric elastic strains may exist in the shock compressed state for weak impacts. An accompanying simple kinematic model for lattice deformation was used to estimate the expected shifts in X-ray diffraction peaks for the (211) plane under impacts normal to (110) planes. The results suggest that negligible relaxation of the deviatoric lattice deformation occurs on the short (10–20 ns) time and wave propagation (40–80 m) scales of laser-driven shock experiments, and that the corresponding elastic strains may be large. Because of the potentially large deviatoric elastic strains, the specific finite deformation strain measure used within thermomechanical single crystal models is of significant consequence, which is explored numerically by the comparison of isothermal purely elastic responses under uniaxial and simple shear deformations.},
doi = {10.1002/prep.201900228},
journal = {Propellants, Explosives, Pyrotechnics},
number = 2,
volume = 45,
place = {United States},
year = {Wed Nov 27 00:00:00 EST 2019},
month = {Wed Nov 27 00:00:00 EST 2019}
}
Web of Science
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