Compression and Shear Wave Propagation in Explosives
Abstract
The objective of the experimental study was to investigate the occurrence of shear-induced reaction (SIR) in an explosive subjected to the type of one-dimensional compression and shear (1DCS) loading produced by the parallel-inclined impact (PII) technique pioneered by Gupta. The objective of the theoretical study was to formulate a treatment of the reactive flow produced in an explosive subjected to 1DCS loading and thereby provide a framework for interpreting the results of the PII experiments. Our theoretical study was based on a model analysis of the PII experiment with the shock-loaded target treated as an inert elastic solid and the resulting flow treated ideally as a pure compression wave followed by a pure shear wave. A complete equation of state for a reactive elastic solid was formulated and used to derive the thermodynamic equations governing the one-dimensional adiabatic flows produced by PII. The experimental study was based on Gupta's premise that significant differences between the sets of longitudinal particle velocity histories recorded in an explosive subjected to normal impact and PII producing equivalent nonreactive compression waves can be taken as evidence for the occurrence of SIR in the PII experiment. Results of shear particle measurements led to the conclusion that the shear deformation produced in Composition B3 by PII remains close to the impact surface.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1989
- Accession Number
- ADA205917
Entities
People
- M. Cowperthwaite
Organizations
- SRI International