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Title: A Computer Model to Study the Response of Energetic Materials to a Range of Dynamic Loads

Journal Article · · Propellants, Explosives, Pyrotechnics
 [1];  [1];  [2];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Physical and Life Sciences Directorate and Materials Science Division
  2. Atomic Weapons Establishment (AWE), Berkshire (United Kingdom); Univ. College London (United Kingdom). Dept. of Mathematics
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Over the past decade we developed a model to enable computer simulation of the mechanical and subsequent energetic response of explosives and propellants to mechanical insults such as impacts, perforations, drops, and falls. The model is embedded in computer simulation programs that solve the non-linear, large deformation equations of compressible solid and fluid flow in space and time. It is implemented as a user-defined model, which returns the updated stress tensor and composition that result from the simulation supplied strain tensor change. Although it is multi-phase, in that gas and solid species are present, it is single-velocity, in that the gas does not flow through the porous solid. More than 70 time-dependent variables are made available for additional analyses and plotting. The model encompasses a broad range of possible responses: mechanical damage with no energetic response, and a continuous spectrum of degrees of violence including delayed and prompt detonation. This work describes the basic workings of the model.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE/USDOD Joint Munitions Technology Development Program (JMP)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1467811
Alternate ID(s):
OSTI ID: 1439368
Report Number(s):
LLNL-JRNL-742811; 897771
Journal Information:
Propellants, Explosives, Pyrotechnics, Vol. 43, Issue 7; ISSN 0721-3115
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

Figures / Tables (3)

Figure 1(p. 4)figure Figure 1
Figure 2(p. 6)figure Figure 2
Figure 3(p. 11)figure Figure 3

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