Molecular Dynamics of Shocks in Crystals with Defects
Abstract
We examine, using computational molecular dynamics, shocks launched in two-dimensional crystals by a flying plate. The interaction of the shock with various lattice defects is observed, and is seen to create sites of rapidly growing, thermalized, hot fluid-like phases included within the crystal lattice. We hypothesize that these included fluid-like regions are the sites of the initial chemical reactions leading to detonation in energetic materials, and that crystallographic defects therefore control the sensitivity of single crystal high explosives to shock-initiation. The computations are carried out on the massively parallel Connection Machine using a parallelized version of the MLG algorithm.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 15, 1992
- Accession Number
- ADA253353
Entities
People
- Elaine Oran
- Jay Paul Boris
- Lee Phillips
- Robert S. Sinkovits
Organizations
- United States Naval Research Laboratory