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Title: An iterative forward analysis technique to determine the equation of state of dynamically compressed materials

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4983067· OSTI ID:1415562
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  1. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Here, we developed an iterative forward analysis (IFA) technique with the ability to use hydrocode simulations as a fitting function for analysis of dynamic compression experiments. The IFA method optimizes over parameterized quantities in the hydrocode simulations, breaking the degeneracy of contributions to the measured material response. Velocity profiles from synthetic data generated using a hydrocode simulation are analyzed as a first-order validation of the technique. We also analyze multiple magnetically driven ramp compression experiments on copper and compare with more conventional techniques. Excellent agreement is obtained in both cases.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1415562
Alternate ID(s):
OSTI ID: 1361874
Report Number(s):
LLNL-JRNL-722880; JAPIAU; TRN: US1800839
Journal Information:
Journal of Applied Physics, Vol. 121, Issue 19; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

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Cited By (3)

Direct calculation of sound speed of materials under ramp wave compression journal November 2018
Bayesian calibration of strength parameters using hydrocode simulations of symmetric impact shock experiments of Al-5083 journal November 2018
Non-iterative characteristics analysis for high-pressure ramp loading journal September 2019