Detonation equation of state at LLNL, 1995. Revision 3

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JWL`s and 1-D Look-up tables are shown to work for ``one-track`` experiments like cylinder shots and the expanding sphere. They fail for ``many-track`` experiments like the compressed sphere. As long as the one-track experiment has dimensions larger than the explosive`s reaction zone and the explosive is near-ideal, a general JWL with R{sub 1} = 4.5 and R{sub 2} = 1.5 can be constructed, with both {omega} and E{sub o} being calculated from thermochemical codes. These general JWL`s allow comparison between various explosives plus recalculation of the JWL for different densities. The Bigplate experiment complements the cylinder test by providing continuous ... continued below

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120 p.

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Souers, P.C.; Wu, B. & Haselman, L.C. Jr. February 1, 1996.

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Description

JWL`s and 1-D Look-up tables are shown to work for ``one-track`` experiments like cylinder shots and the expanding sphere. They fail for ``many-track`` experiments like the compressed sphere. As long as the one-track experiment has dimensions larger than the explosive`s reaction zone and the explosive is near-ideal, a general JWL with R{sub 1} = 4.5 and R{sub 2} = 1.5 can be constructed, with both {omega} and E{sub o} being calculated from thermochemical codes. These general JWL`s allow comparison between various explosives plus recalculation of the JWL for different densities. The Bigplate experiment complements the cylinder test by providing continuous oblique angles of shock incidence from 0{degrees} to 70{degrees}. Explosive reaction zone lengths are determined from metal plate thicknesses, extrapolated run-to-detonation distances, radius size effects and detonation front curvature. Simple theories of the cylinder test, Bigplate, the cylinder size effect and detonation front curvature are given. The detonation front lag at the cylinder edge is shown to be proportional to the half-power of the reaction zone length. By calibrating for wall blow-out, a full set of reaction zone lengths from PETN to ANFO are obtained. The 1800--2100 K freezing effect is shown to be caused by rapid cooling of the product gases. Compiled comparative data for about 80 explosives is listed. Ten Chapters plus an Appendix.

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120 p.

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OSTI as DE96006010

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  • Other Information: PBD: 1 Feb 1996

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  • Other: DE96006010
  • Report No.: UCRL-ID--119262-Rev.3
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/204120 | External Link
  • Office of Scientific & Technical Information Report Number: 204120
  • Archival Resource Key: ark:/67531/metadc671626

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  • February 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Feb. 18, 2016, 12:28 p.m.

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Souers, P.C.; Wu, B. & Haselman, L.C. Jr. Detonation equation of state at LLNL, 1995. Revision 3, report, February 1, 1996; California. (digital.library.unt.edu/ark:/67531/metadc671626/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.