Cylinder Test Correction for Copper Work Hardening and Spall
Abstract
As a basis for the corrections to be discussed, an analytical equation is first presented for calculating detonation energy densities from copper wall velocities in the Cylinder test. Steinberg-Guinan work hardening is sufficient for the Cylinder problem, between 1 and 60 GPa, with a change of Yo to 0.10 kJ cm–3 for annealed copper. An air gap correction was the first to be applied, which is a function of the initial air gap width and the tilt angle of the cylinder. Irreversible heat loss was also found to be a small error. Spall is calibrated using new copper gun shot data and this energy is also small. The model up through work hardening agrees with the code, which does not contain heat loss or spall, both of which equal the error of repetitive calculation. In conclusion, the effect of the many additions to the original Gurney energy is shown.
- Authors:
-
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1466925
- Report Number(s):
- LLNL-JRNL-655006
Journal ID: ISSN 0721-3115; 775700
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Propellants, Explosives, Pyrotechnics
- Additional Journal Information:
- Journal Volume: 40; Journal Issue: 2; Journal ID: ISSN 0721-3115
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; Cylinder test; Detonation energy; OFHC copper; Work hardening; Spall
Citation Formats
Souers, P. Clark, and Minich, Roger. Cylinder Test Correction for Copper Work Hardening and Spall. United States: N. p., 2015.
Web. doi:10.1002/prep.201400135.
Souers, P. Clark, & Minich, Roger. Cylinder Test Correction for Copper Work Hardening and Spall. United States. https://doi.org/10.1002/prep.201400135
Souers, P. Clark, and Minich, Roger. Tue .
"Cylinder Test Correction for Copper Work Hardening and Spall". United States. https://doi.org/10.1002/prep.201400135. https://www.osti.gov/servlets/purl/1466925.
@article{osti_1466925,
title = {Cylinder Test Correction for Copper Work Hardening and Spall},
author = {Souers, P. Clark and Minich, Roger},
abstractNote = {As a basis for the corrections to be discussed, an analytical equation is first presented for calculating detonation energy densities from copper wall velocities in the Cylinder test. Steinberg-Guinan work hardening is sufficient for the Cylinder problem, between 1 and 60 GPa, with a change of Yo to 0.10 kJ cm–3 for annealed copper. An air gap correction was the first to be applied, which is a function of the initial air gap width and the tilt angle of the cylinder. Irreversible heat loss was also found to be a small error. Spall is calibrated using new copper gun shot data and this energy is also small. The model up through work hardening agrees with the code, which does not contain heat loss or spall, both of which equal the error of repetitive calculation. In conclusion, the effect of the many additions to the original Gurney energy is shown.},
doi = {10.1002/prep.201400135},
journal = {Propellants, Explosives, Pyrotechnics},
number = 2,
volume = 40,
place = {United States},
year = {Tue Feb 17 00:00:00 EST 2015},
month = {Tue Feb 17 00:00:00 EST 2015}
}
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Works referencing / citing this record:
Terminal velocity of liquids and granular materials dispersed by a high explosive
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