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Title: Mesoscale simulations of shock initiation in energetic materials characterized by three-dimensional nanotomography.

Abstract

Three-dimensional shock simulations of energetic materials have been conducted to improve our understanding of initiation at the mesoscale. Vapor-deposited films of PETN and pressed powders of HNS were characterized with a novel three-dimensional nanotomographic technique. Detailed microstructures were constructed experimentally from a stack of serial electron micrographs obtained by successive milling and imaging in a dual-beam FIB/SEM. These microstructures were digitized and imported into a multidimensional, multimaterial Eulerian shock physics code. The simulations provided insight into the mechanisms of pore collapse in PETN and HNS samples with distinctly different three-dimensional pore morphology and distribution. This modeling effort supports investigations of microscale explosive phenomenology and elucidates mechanisms governing initiation of secondary explosives.

Authors:
; ; ;
Publication Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
973674
Report Number(s):
SAND2009-4849C
TRN: US201006%%942
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Proposed for presentation at the 16th APS Topical Group on Shock Compression of Condensed Matter held June 28-July 3, 2009 in Nashville, TN.
Country of Publication:
United States
Language:
English
Subject:
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; THREE-DIMENSIONAL CALCULATIONS; IMPACT SHOCK; EXPLOSIONS; PETN; CHEMICAL EXPLOSIVES; MICROSTRUCTURE; COMPUTERIZED SIMULATION; PORE STRUCTURE

Citation Formats

Long, Gregory T, Brundage, Aaron L, Wixom, Ryan R, and Tappan, Alexander Smith. Mesoscale simulations of shock initiation in energetic materials characterized by three-dimensional nanotomography.. United States: N. p., 2009. Web.
Long, Gregory T, Brundage, Aaron L, Wixom, Ryan R, & Tappan, Alexander Smith. Mesoscale simulations of shock initiation in energetic materials characterized by three-dimensional nanotomography.. United States.
Long, Gregory T, Brundage, Aaron L, Wixom, Ryan R, and Tappan, Alexander Smith. Sat . "Mesoscale simulations of shock initiation in energetic materials characterized by three-dimensional nanotomography.". United States.
@article{osti_973674,
title = {Mesoscale simulations of shock initiation in energetic materials characterized by three-dimensional nanotomography.},
author = {Long, Gregory T and Brundage, Aaron L and Wixom, Ryan R and Tappan, Alexander Smith},
abstractNote = {Three-dimensional shock simulations of energetic materials have been conducted to improve our understanding of initiation at the mesoscale. Vapor-deposited films of PETN and pressed powders of HNS were characterized with a novel three-dimensional nanotomographic technique. Detailed microstructures were constructed experimentally from a stack of serial electron micrographs obtained by successive milling and imaging in a dual-beam FIB/SEM. These microstructures were digitized and imported into a multidimensional, multimaterial Eulerian shock physics code. The simulations provided insight into the mechanisms of pore collapse in PETN and HNS samples with distinctly different three-dimensional pore morphology and distribution. This modeling effort supports investigations of microscale explosive phenomenology and elucidates mechanisms governing initiation of secondary explosives.},
doi = {},
url = {https://www.osti.gov/biblio/973674}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {8}
}

Conference:
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