Modeling Propagation of Shock Waves in Metals

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We present modeling results for the propagation of strong shock waves in metals. In particular, we use an arbitrary Lagrange Eulerian (ALE3D) code to model the propagation of strong pressure waves (P {approx} 300 to 400 kbars) generated with high explosives in contact with aluminum cylinders. The aluminum cylinders are assumed to be both flat-topped and have large-amplitude curved surfaces. We use 3D Lagrange mechanics. For the aluminum we use a rate-independent Steinberg-Guinan model, where the yield strength and shear modulus depend on pressure, density and temperature. The calculation of the melt temperature is based on the Lindermann law. At ... continued below

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Howard, W M & Molitoris, J D August 19, 2005.

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We present modeling results for the propagation of strong shock waves in metals. In particular, we use an arbitrary Lagrange Eulerian (ALE3D) code to model the propagation of strong pressure waves (P {approx} 300 to 400 kbars) generated with high explosives in contact with aluminum cylinders. The aluminum cylinders are assumed to be both flat-topped and have large-amplitude curved surfaces. We use 3D Lagrange mechanics. For the aluminum we use a rate-independent Steinberg-Guinan model, where the yield strength and shear modulus depend on pressure, density and temperature. The calculation of the melt temperature is based on the Lindermann law. At melt the yield strength and shear modulus is set to zero. The pressure is represented as a seven-term polynomial as a function of density. For the HMX-based high explosive, we use a JWL, with a program burn model that give the correct detonation velocity and C-J pressure (P {approx} 390 kbars). For the case of the large-amplitude curved surface, we discuss the evolving shock structure in terms of the early shock propagation experiments by Sakharov.

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PDF-file: 6 pages; size: 1.1 Mbytes

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  • Presented at: APS Topical SCCM Meeting, Baltimore, MD, United States, Jul 31 - Aug 05, 2005

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  • Report No.: UCRL-CONF-214907
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 877842
  • Archival Resource Key: ark:/67531/metadc881013

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Office of Scientific & Technical Information Technical Reports

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  • August 19, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 29, 2016, 8:21 p.m.

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Howard, W M & Molitoris, J D. Modeling Propagation of Shock Waves in Metals, article, August 19, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc881013/: accessed August 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.