Simulation of a ceramic impact experiment using the SPHINX smooth particle hydrodynamics code

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We are developing statistically based, brittle-fracture models and are implementing them into hydrocodes that can be used for designing systems with components of ceramics, glass, and/or other brittle materials. Because of the advantages it has simulating fracture, we are working primarily with the smooth particle hydrodynamics code SPHINX. We describe a new brittle fracture model that we have implemented into SPHINX, and we discuss how the model differs from others. To illustrate the code`s current capability, we simulate an experiment in which a tungsten rod strikes a target of heavily confined ceramic. Simulations in 3D at relatively coarse resolution yield ... continued below

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10 p.

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Mandell, D.A.; Wingate, C.A. & Schwalbe, L.A. August 1, 1996.

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Description

We are developing statistically based, brittle-fracture models and are implementing them into hydrocodes that can be used for designing systems with components of ceramics, glass, and/or other brittle materials. Because of the advantages it has simulating fracture, we are working primarily with the smooth particle hydrodynamics code SPHINX. We describe a new brittle fracture model that we have implemented into SPHINX, and we discuss how the model differs from others. To illustrate the code`s current capability, we simulate an experiment in which a tungsten rod strikes a target of heavily confined ceramic. Simulations in 3D at relatively coarse resolution yield poor results. However, 2D plane-strain approximations to the test produce crack patterns that are strikingly similar to the data, although the fracture model needs further refinement to match some of the finer details. We conclude with an outline of plans for continuing research and development.

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10 p.

Notes

OSTI as DE96012625

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  • 16. international symposium on ballistics, San Francisco, CA (United States), 23-28 Sep 1996

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  • Other: DE96012625
  • Report No.: LA-UR--96-1878
  • Report No.: CONF-960982--2
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 266913
  • Archival Resource Key: ark:/67531/metadc664492

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Office of Scientific & Technical Information Technical Reports

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  • August 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • April 21, 2016, 10:06 p.m.

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Mandell, D.A.; Wingate, C.A. & Schwalbe, L.A. Simulation of a ceramic impact experiment using the SPHINX smooth particle hydrodynamics code, article, August 1, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc664492/: accessed July 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.