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Title: Plasticity at High Pressures and Strain Rates Using Oblique-Impact Isentropic-Compression Experiments

Abstract

Part of LLNL’s national security mission is reliant on accurate simulations of high strain-rate plastic flow (nonreversible deformation) under conditions of high hydrostatic pressures. In an effort to help advance the predictive capability of LLNL’s multiscale modeling program a new experimental technique has been developed to provide strength properties under conditions of high strain rate (104 -106 s-1) and high hydrostatic pressure (1- 100 GPa). The oblique-impact experiments allow for the shearing response of the material to be independently measured while the material is under pressure. The strength of the material is then inferred by conducting 2-D hydrodynamic simulations to match to the experimentally measured velocity profiles. Utilizing this technique, Cu and V experiments have been conducted that establish the utility of this technique to measure strength under dynamic conditions.

Authors:
 [1];  [2];  [2];  [2];  [1];  [1];  [1];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Brown Univ., Providence, RI (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1116940
Report Number(s):
LLNL-TR-426279
DOE Contract Number:  
W-7405-ENG-48; AC52-07NA27344
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Florando, Jeff N., Jiao, Tong, Grunschel, Stephen E., Clifton, Rodney J., Lassila, David H., Ferranti, Jr., Louis, Becker, Richard C., Minich, Roger W., and Bazan, Grant. Plasticity at High Pressures and Strain Rates Using Oblique-Impact Isentropic-Compression Experiments. United States: N. p., 2010. Web. doi:10.2172/1116940.
Florando, Jeff N., Jiao, Tong, Grunschel, Stephen E., Clifton, Rodney J., Lassila, David H., Ferranti, Jr., Louis, Becker, Richard C., Minich, Roger W., & Bazan, Grant. Plasticity at High Pressures and Strain Rates Using Oblique-Impact Isentropic-Compression Experiments. United States. https://doi.org/10.2172/1116940
Florando, Jeff N., Jiao, Tong, Grunschel, Stephen E., Clifton, Rodney J., Lassila, David H., Ferranti, Jr., Louis, Becker, Richard C., Minich, Roger W., and Bazan, Grant. 2010. "Plasticity at High Pressures and Strain Rates Using Oblique-Impact Isentropic-Compression Experiments". United States. https://doi.org/10.2172/1116940. https://www.osti.gov/servlets/purl/1116940.
@article{osti_1116940,
title = {Plasticity at High Pressures and Strain Rates Using Oblique-Impact Isentropic-Compression Experiments},
author = {Florando, Jeff N. and Jiao, Tong and Grunschel, Stephen E. and Clifton, Rodney J. and Lassila, David H. and Ferranti, Jr., Louis and Becker, Richard C. and Minich, Roger W. and Bazan, Grant},
abstractNote = {Part of LLNL’s national security mission is reliant on accurate simulations of high strain-rate plastic flow (nonreversible deformation) under conditions of high hydrostatic pressures. In an effort to help advance the predictive capability of LLNL’s multiscale modeling program a new experimental technique has been developed to provide strength properties under conditions of high strain rate (104 -106 s-1) and high hydrostatic pressure (1- 100 GPa). The oblique-impact experiments allow for the shearing response of the material to be independently measured while the material is under pressure. The strength of the material is then inferred by conducting 2-D hydrodynamic simulations to match to the experimentally measured velocity profiles. Utilizing this technique, Cu and V experiments have been conducted that establish the utility of this technique to measure strength under dynamic conditions.},
doi = {10.2172/1116940},
url = {https://www.osti.gov/biblio/1116940}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Mar 22 00:00:00 EDT 2010},
month = {Mon Mar 22 00:00:00 EDT 2010}
}