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Title: Strength and viscosity effects on perturbed shock front stability in metals

Abstract

Computational modeling and experimental measurements on metal samples subject to a laser-driven, ablative Richtmyer-Meshkov instability showed differences between viscosity and strength effects. In particular, numerical and analytical solutions coupled with measurements of fed-thru perturbations; generated by perturbed shock fronts, onto initially flat surfaces show promise as a validation method for deviatoric response in the post shocked material. The analysis shows that measurements of shock perturbation amplitudes at low sample thickness-to-wavelength ratios are not enough to differentiate between strength and viscosity effects, but that surface displacement data of the fed-thru perturbations appears to resolve the ambiguity. Additionally, analytical and numerical results show shock front perturbation evolution dependence on initial perturbation amplitude and wavelength is significantly different in viscous and materials with strength, suggesting simple experimental geometry changes should provide validation data supporting one model or the other.

Authors:
 [1];  [2];  [1];  [2];  [2]
+ Show Author Affiliations
  1. Arizona State Univ., Tempe, AZ (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Arizona State Univ., Tempe, AZ (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE Office of Science (SC). Fusion Energy Sciences (FES) (SC-24); USDOE National Nuclear Security Administration (NNSA)
Contributing Org.:
Los Alamos National Laboratory
OSTI Identifier:
1356634
Alternate Identifier(s):
OSTI ID: 1356277; OSTI ID: 1369184; OSTI ID: 1460717
Report Number(s):
LA-UR-16-27117; DOE-ASU-02005-4
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US1702730
Grant/Contract Number:  
SC0008683; AC52-06NA25396; NA0002005
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 118; Journal Issue: 19; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; shocks; hydrodynamic instabilities; strength; viscosity; Hydrodynamic instability; perturbed shock

Citation Formats

Opie, Saul, Loomis, Eric Nicholas, Peralta, Pedro, Shimada, Tsutomu, and Johnson, Randall Philip. Strength and viscosity effects on perturbed shock front stability in metals. United States: N. p., 2017. Web. doi:10.1103/PhysRevLett.118.195501.
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Opie, Saul, Loomis, Eric Nicholas, Peralta, Pedro, Shimada, Tsutomu, & Johnson, Randall Philip. Strength and viscosity effects on perturbed shock front stability in metals. United States. https://doi.org/10.1103/PhysRevLett.118.195501
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Opie, Saul, Loomis, Eric Nicholas, Peralta, Pedro, Shimada, Tsutomu, and Johnson, Randall Philip. Tue . "Strength and viscosity effects on perturbed shock front stability in metals". United States. https://doi.org/10.1103/PhysRevLett.118.195501. https://www.osti.gov/servlets/purl/1356634.
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@article{osti_1356634,
title = {Strength and viscosity effects on perturbed shock front stability in metals},
author = {Opie, Saul and Loomis, Eric Nicholas and Peralta, Pedro and Shimada, Tsutomu and Johnson, Randall Philip},
abstractNote = {Computational modeling and experimental measurements on metal samples subject to a laser-driven, ablative Richtmyer-Meshkov instability showed differences between viscosity and strength effects. In particular, numerical and analytical solutions coupled with measurements of fed-thru perturbations; generated by perturbed shock fronts, onto initially flat surfaces show promise as a validation method for deviatoric response in the post shocked material. The analysis shows that measurements of shock perturbation amplitudes at low sample thickness-to-wavelength ratios are not enough to differentiate between strength and viscosity effects, but that surface displacement data of the fed-thru perturbations appears to resolve the ambiguity. Additionally, analytical and numerical results show shock front perturbation evolution dependence on initial perturbation amplitude and wavelength is significantly different in viscous and materials with strength, suggesting simple experimental geometry changes should provide validation data supporting one model or the other.},
doi = {10.1103/PhysRevLett.118.195501},
journal = {Physical Review Letters},
number = 19,
volume = 118,
place = {United States},
year = {Tue May 09 00:00:00 EDT 2017},
month = {Tue May 09 00:00:00 EDT 2017}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1103/PhysRevLett.118.195501
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    Works referencing / citing this record:

    Letter: Magneto-Rayleigh-Taylor instability in an elastic-medium slab
    journal, November 2018

    • Piriz, S. A.; Piriz, A. R.; Tahir, N. A.
    • Physics of Fluids, Vol. 30, Issue 11
    • DOI: 10.1063/1.5050800

    Stability boundaries for the Rayleigh-Taylor instability in accelerated elastic-plastic solid slabs
    journal, December 2019

    Rayleigh-Taylor instability in accelerated elastic-solid slabs
    journal, December 2017

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