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Title: Comparison of calculated and experimental results of fragmenting cylinder experiments

Abstract

The Grady-Kipp fragmentation model provides a physically based method for determining the fracture and breakup of materials under high loading rates. Recently, this model has been implemented into the CTH Shock Physics Code and has been used to simulate several published experiments. Materials studied in this paper are AerMet 100 steel and a 90% tungsten alloy. The experimental geometry consists of a right circular cylinder filled with an explosive main charge that is initiated at its center. The sudden expansion of the resulting detonation products causes fracture of the cylinder. Strain rates seen in the cylinder are on the order of 10{sup 4} s{sup {minus}1}. The average fragment sizes calculated with the Grady-Kipp fragmentation model successfully replicate the mean fragment size obtained from the experimental fragment distribution. When Poisson statistics are applied to the calculated local average fragment sizes, good correlation is also observed with the shape of the experimental cumulative fragment distribution. The experimental fragmentation results, CTH numerical simulations, and correlation of these numerical results with the experimental data are described.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
756417
Report Number(s):
SAND2000-1406C
TRN: AH200022%%40
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Exploment 2000, Albuquerque, NM (US), 06/18/2000--06/22/2000; Other Information: PBD: 2 Jun 2000
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; STEELS; TUNGSTEN BASE ALLOYS; EXPLOSIVE FRACTURING; CYLINDERS; STRAIN RATE; MATHEMATICAL MODELS

Citation Formats

WILSON,L.T., REEDAL,D.R., KIPP,MARLIN E., MARTINEZ,REINA R., and GRADY,D.E. Comparison of calculated and experimental results of fragmenting cylinder experiments. United States: N. p., 2000. Web.
WILSON,L.T., REEDAL,D.R., KIPP,MARLIN E., MARTINEZ,REINA R., & GRADY,D.E. Comparison of calculated and experimental results of fragmenting cylinder experiments. United States.
WILSON,L.T., REEDAL,D.R., KIPP,MARLIN E., MARTINEZ,REINA R., and GRADY,D.E. Fri . "Comparison of calculated and experimental results of fragmenting cylinder experiments". United States. https://www.osti.gov/servlets/purl/756417.
@article{osti_756417,
title = {Comparison of calculated and experimental results of fragmenting cylinder experiments},
author = {WILSON,L.T. and REEDAL,D.R. and KIPP,MARLIN E. and MARTINEZ,REINA R. and GRADY,D.E.},
abstractNote = {The Grady-Kipp fragmentation model provides a physically based method for determining the fracture and breakup of materials under high loading rates. Recently, this model has been implemented into the CTH Shock Physics Code and has been used to simulate several published experiments. Materials studied in this paper are AerMet 100 steel and a 90% tungsten alloy. The experimental geometry consists of a right circular cylinder filled with an explosive main charge that is initiated at its center. The sudden expansion of the resulting detonation products causes fracture of the cylinder. Strain rates seen in the cylinder are on the order of 10{sup 4} s{sup {minus}1}. The average fragment sizes calculated with the Grady-Kipp fragmentation model successfully replicate the mean fragment size obtained from the experimental fragment distribution. When Poisson statistics are applied to the calculated local average fragment sizes, good correlation is also observed with the shape of the experimental cumulative fragment distribution. The experimental fragmentation results, CTH numerical simulations, and correlation of these numerical results with the experimental data are described.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {6}
}

Conference:
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