Study of shock-induced signals and coherent effects in solids by molecular dynamics [electronic resource].
- Livermore, Calif : Lawrence Livermore National Laboratory, 1981. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: 22 : digital, PDF file
- Additional Creators:
- Lawrence Livermore National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
- Molecular dynamics calculations are presented that address the extent of microscopic detail that can be deduced from macroscopic gauge measurements of shock propagation in condensed systems. We have simulated large asymmetrically shock-loaded lattices, varying the initial temperature of both the loading plates and the lattice. Specifically: we have studied triple shock loading of a thin lattice; double shock loading of the same lattice; and triple shock loading of a thick lattice. In all cases we found strong memory effects in that the spall pattern always mirrors the loading history. This is a direct consequence of our two basic results: (a) the energy in finite width shocks is only weakly coupled to motions transverse to their direction of propagation; and (b) coupling between shock motion and random thermal motion is relatively weak, even in lattices that are near their melting temperatures.
- Published through SciTech Connect., 08/31/1981., "ucrl-85576", " conf-810874-1", "DE81030412", 8. international colloquium on gasdynamics of explosions and reactive systems, Minsk, USSR, 23 Aug 1981., and Hardy, J.R.; Cunningham, W.G.; Walker, F.E.; Karo, A.M.
- Funding Information:
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