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

Reaugh, John E.; White, Bradley W.; Curtis, John P.; Springer, H. Keo

doi:10.1002/prep.201700287

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

Abstract

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.

Authors:

Reaugh, John E. ^[1]; White, Bradley W. ^[1]; Curtis, John P. ^[2]; Springer, H. Keo ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Physical and Life Sciences Directorate and Materials Science Division
Atomic Weapons Establishment (AWE), Berkshire (United Kingdom); Univ. College London (United Kingdom). Dept. of Mathematics

Publication Date:: Tue May 29 00:00:00 EDT 2018

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA); USDOE/USDOD Joint Munitions Technology Development Program (JMP)

OSTI Identifier:: 1467811

Alternate Identifier(s):: OSTI ID: 1439368

Report Number(s):: LLNL-JRNL-742811
Journal ID: ISSN 0721-3115; 897771

Grant/Contract Number:: AC52-07NA27344

Resource Type:: Accepted Manuscript

Journal Name:: Propellants, Explosives, Pyrotechnics

Additional Journal Information:: Journal Volume: 43; Journal Issue: 7; Journal ID: ISSN 0721-3115

Publisher:: Wiley

Country of Publication:: United States

Language:: English

Subject:: 97 MATHEMATICS AND COMPUTING; 36 MATERIALS SCIENCE; 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; non-shock ignition; strength model; delayed detonation; deflagration; HERMES model

Citation Formats


                    Reaugh, John E., White, Bradley W., Curtis, John P., and Springer, H. Keo. A Computer Model to Study the Response of Energetic Materials to a Range of Dynamic Loads.  United States: N. p., 2018. 
Web.  doi:10.1002/prep.201700287.

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                    Reaugh, John E., White, Bradley W., Curtis, John P., & Springer, H. Keo. A Computer Model to Study the Response of Energetic Materials to a Range of Dynamic Loads.  United States.  https://doi.org/10.1002/prep.201700287

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                    Reaugh, John E., White, Bradley W., Curtis, John P., and Springer, H. Keo. Tue .  
"A Computer Model to Study the Response of Energetic Materials to a Range of Dynamic Loads".  United States.  https://doi.org/10.1002/prep.201700287.  https://www.osti.gov/servlets/purl/1467811.

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@article{osti_1467811,

  title        = {A Computer Model to Study the Response of Energetic Materials to a Range of Dynamic Loads},

  author       = {Reaugh, John E. and White, Bradley W. and Curtis, John P. and Springer, H. Keo},

  abstractNote = {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.},

  doi          = {10.1002/prep.201700287},

  journal      = {Propellants, Explosives, Pyrotechnics},

  number       = 7,

  volume       = 43,

  place        = {United States},

  year         = {Tue May 29 00:00:00 EDT 2018},

  month        = {Tue May 29 00:00:00 EDT 2018}

}

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https://doi.org/10.1002/prep.201700287

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Cited by: 8 works

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Figure 1: Illustration of low porosity (25% by volume, left), where stress-bridging can occur from one side of the cross section to the other in the connected matrix of solid, and high porosity (75% by volume, right), where the individual particles of solid are in pressure equilibrium with the surroundingmore »

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