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Title: DDT modeling and shock compression experiments of porous or damaged energetic materials

Abstract

In this presentation, we present modeling of DDT in porous energetic materials and experimental studies of a time-resolved, shock compression of highly porous inert and reactive materials. This combined theoretical and experimental studies explore the nature of the microscale processes of consolidation, deformation and reaction which are key features of the shock response of porous or damaged energetic materials. The theoretical modeling is based on the theory of mixtures in which multiphase mixtures are treated in complete nonequilibrium allowing for internal boundary effects associated mass/momentum and energy exchange between phases, relative flow, rate-dependent compaction behavior, multistage chemistry and interphase boundary effects. Numerous studies of low-velocity impacts using a high resolution adaptive finite element method are presented which replicate experimental observations. The incorporation of this model into multi-material hydrocode analysis will be discussed to address the effects of confinement and its influence on accelerated combustion behavior. The experimental studies will focus on the use of PVDF piezoelectric polymer stress-rate gauge to precisely measure the input and propagating shock stress response of porous materials. In addition to single constituent porous materials, such as granular HMX, we have resolved shock waves in porous composite intermetallic powders that confirm a dispersive wave nature whichmore » is highly morphologically and material dependent. This document consists of viewgraphs from the poster session.« less

Authors:
; ;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10148699
Report Number(s):
SAND-94-1188C; CONF-9405136-6
ON: DE94011419; BR: GB0103012
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: 1994 joint USA-Russia energetic material technology symposium,Livermore, CA (United States),18-25 May 1994; Other Information: PBD: [1994]
Country of Publication:
United States
Language:
English
Subject:
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; CHEMICAL EXPLOSIVES; MATHEMATICAL MODELS; SHOCK WAVES; COMPRESSION; DEFORMATION; FINITE ELEMENT METHOD; IMPACT TESTS; STRESS ANALYSIS; 450100; 990200; CHEMICAL EXPLOSIONS AND EXPLOSIVES; MATHEMATICS AND COMPUTERS

Citation Formats

Baer, M R, Anderson, M U, and Graham, R A. DDT modeling and shock compression experiments of porous or damaged energetic materials. United States: N. p., 1994. Web.
Baer, M R, Anderson, M U, & Graham, R A. DDT modeling and shock compression experiments of porous or damaged energetic materials. United States.
Baer, M R, Anderson, M U, and Graham, R A. 1994. "DDT modeling and shock compression experiments of porous or damaged energetic materials". United States. https://www.osti.gov/servlets/purl/10148699.
@article{osti_10148699,
title = {DDT modeling and shock compression experiments of porous or damaged energetic materials},
author = {Baer, M R and Anderson, M U and Graham, R A},
abstractNote = {In this presentation, we present modeling of DDT in porous energetic materials and experimental studies of a time-resolved, shock compression of highly porous inert and reactive materials. This combined theoretical and experimental studies explore the nature of the microscale processes of consolidation, deformation and reaction which are key features of the shock response of porous or damaged energetic materials. The theoretical modeling is based on the theory of mixtures in which multiphase mixtures are treated in complete nonequilibrium allowing for internal boundary effects associated mass/momentum and energy exchange between phases, relative flow, rate-dependent compaction behavior, multistage chemistry and interphase boundary effects. Numerous studies of low-velocity impacts using a high resolution adaptive finite element method are presented which replicate experimental observations. The incorporation of this model into multi-material hydrocode analysis will be discussed to address the effects of confinement and its influence on accelerated combustion behavior. The experimental studies will focus on the use of PVDF piezoelectric polymer stress-rate gauge to precisely measure the input and propagating shock stress response of porous materials. In addition to single constituent porous materials, such as granular HMX, we have resolved shock waves in porous composite intermetallic powders that confirm a dispersive wave nature which is highly morphologically and material dependent. This document consists of viewgraphs from the poster session.},
doi = {},
url = {https://www.osti.gov/biblio/10148699}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun May 01 00:00:00 EDT 1994},
month = {Sun May 01 00:00:00 EDT 1994}
}

Conference:
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