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Title: Analysis of steady compaction waves in polyurea aerogel

Abstract

In this work, steady compaction waves in an inert porous material are investigated using a p - α model. In a steady traveling wave reference frame, the one-dimensional Euler equations are reduced to a set of ordinary differential equations. A Mie-Grüneisen equation of state (EOS) is used with parameters calibrated for polyurea aerogel (PUA). Analytic solutions for non-equilibrium compaction are developed which compliment numerical simulations and are able to predict the complete wave structure, including the compaction wave speed, zone length, and final compacted solid volume fraction. The dynamic compaction of PUA is studied for a range of piston velocities. Three regions of behavior are identified: supersonic, subsonic-complete, and subsonic-partial compaction. Below a critical piston velocity, a subsonic compaction wave is produced without a leading shock. Finally, at even lower piston velocities, there is partial compaction and a greater dependence on the dynamic compaction relation. Some features and limitations of the current model are discussed.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1565844
Report Number(s):
LA-UR-17-27337
Journal ID: ISSN 0094-243X
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Accepted Manuscript
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1979; Conference: SHOCK COMPRESSION OF CONDENSED MATTER , St. Louis, MO (United States), 9-14 July 2017; Journal ID: ISSN 0094-243X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; shock; porous; compaction wave; analytic

Citation Formats

Price, Matthew Anthony, Aslam, Tariq Dennis, and Quirk, James J. Analysis of steady compaction waves in polyurea aerogel. United States: N. p., 2018. Web. doi:10.1063/1.5044935.
Price, Matthew Anthony, Aslam, Tariq Dennis, & Quirk, James J. Analysis of steady compaction waves in polyurea aerogel. United States. doi:10.1063/1.5044935.
Price, Matthew Anthony, Aslam, Tariq Dennis, and Quirk, James J. Tue . "Analysis of steady compaction waves in polyurea aerogel". United States. doi:10.1063/1.5044935. https://www.osti.gov/servlets/purl/1565844.
@article{osti_1565844,
title = {Analysis of steady compaction waves in polyurea aerogel},
author = {Price, Matthew Anthony and Aslam, Tariq Dennis and Quirk, James J.},
abstractNote = {In this work, steady compaction waves in an inert porous material are investigated using a p - α model. In a steady traveling wave reference frame, the one-dimensional Euler equations are reduced to a set of ordinary differential equations. A Mie-Grüneisen equation of state (EOS) is used with parameters calibrated for polyurea aerogel (PUA). Analytic solutions for non-equilibrium compaction are developed which compliment numerical simulations and are able to predict the complete wave structure, including the compaction wave speed, zone length, and final compacted solid volume fraction. The dynamic compaction of PUA is studied for a range of piston velocities. Three regions of behavior are identified: supersonic, subsonic-complete, and subsonic-partial compaction. Below a critical piston velocity, a subsonic compaction wave is produced without a leading shock. Finally, at even lower piston velocities, there is partial compaction and a greater dependence on the dynamic compaction relation. Some features and limitations of the current model are discussed.},
doi = {10.1063/1.5044935},
journal = {AIP Conference Proceedings},
number = ,
volume = 1979,
place = {United States},
year = {2018},
month = {7}
}

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