Modeling the viscoelastic and brittle fracture response of a high explosive in an Eulerian hydrocode

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A constitutive model that incorporates brittle-fracture-mechanics and viscoelastic material response for PBX-9501 has been developed and implemented in the two-dimensional hydrocode MESA. The hydrocode with the visco-cracking model has been applied to numerous low-rate deformation and low-speed impact events. Several low-speed impact experiments that have quantified the deformation to the explosive have been used to assess the hydrocode and model for this type of material response problem. Comparisons between MESA w/visco-cracking model calculations and experimentally measured mechanical deformation to the explosive showed that reasonable agreement was achieved for the measured magnitude of deformation but the deformation profiles/shapes were found to ... continued below

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8 p.

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Clancy, S.P.; Johnson, J.N. & Burkett, M.W. December 31, 1998.

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Description

A constitutive model that incorporates brittle-fracture-mechanics and viscoelastic material response for PBX-9501 has been developed and implemented in the two-dimensional hydrocode MESA. The hydrocode with the visco-cracking model has been applied to numerous low-rate deformation and low-speed impact events. Several low-speed impact experiments that have quantified the deformation to the explosive have been used to assess the hydrocode and model for this type of material response problem. Comparisons between MESA w/visco-cracking model calculations and experimentally measured mechanical deformation to the explosive showed that reasonable agreement was achieved for the measured magnitude of deformation but the deformation profiles/shapes were found to be different.

Physical Description

8 p.

Notes

OSTI as DE99001764

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  • 11. detonation symposium, Snowmass, CO (United States), 31 Aug - 4 Sep 1998

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  • Other: DE99001764
  • Report No.: LA-UR--98-2972
  • Report No.: CONF-980803--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 353170
  • Archival Resource Key: ark:/67531/metadc687642

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  • December 31, 1998

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Feb. 25, 2016, 9:13 p.m.

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Clancy, S.P.; Johnson, J.N. & Burkett, M.W. Modeling the viscoelastic and brittle fracture response of a high explosive in an Eulerian hydrocode, article, December 31, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc687642/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.