A Coupled Damage and Reaction Model for Simulating Energetic Material Response to Impact Hazards

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Description

The Baer-Nunziato multiphase reactive theory for a granulated bed of energetic material is extended to allow for dynamic damage processes, that generate new surfaces as well as porosity. The Second Law of Thermodynamics is employed to constrain the constitutive forms of the mass, momentum, and energy exchange functions as well as those for the mechanical damage model ensuring that the models will be dissipative. The focus here is on the constitutive forms of the exchange functions. The mechanical constitutive modeling is discussed in a companion paper. The mechanical damage model provides dynamic surface area and porosity information needed by the ... continued below

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4 p.

Creation Information

BAER,MELVIN R.; DRUMHELLER,D.S. & MATHESON,E.R. September 1, 1999.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA
    Place of Publication: Albuquerque, New Mexico

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Description

The Baer-Nunziato multiphase reactive theory for a granulated bed of energetic material is extended to allow for dynamic damage processes, that generate new surfaces as well as porosity. The Second Law of Thermodynamics is employed to constrain the constitutive forms of the mass, momentum, and energy exchange functions as well as those for the mechanical damage model ensuring that the models will be dissipative. The focus here is on the constitutive forms of the exchange functions. The mechanical constitutive modeling is discussed in a companion paper. The mechanical damage model provides dynamic surface area and porosity information needed by the exchange functions to compute combustion rates and interphase momentum and energy exchange rates. The models are implemented in the CTH shock physics code and used to simulate delayed detonations due to impacts in a bed of granulated energetic material and an undamaged cylindrical sample.

Physical Description

4 p.

Notes

OSTI as DE00013992

Medium: P; Size: 4 pages

Source

  • American Physical Society, Snowbird, UT (US), 06/27/1999--07/02/1999

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  • Report No.: SAND99-2321C
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 13992
  • Archival Resource Key: ark:/67531/metadc623165

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  • September 1, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 10, 2017, 7:50 p.m.

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BAER,MELVIN R.; DRUMHELLER,D.S. & MATHESON,E.R. A Coupled Damage and Reaction Model for Simulating Energetic Material Response to Impact Hazards, article, September 1, 1999; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc623165/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.