Acceleration of Aluminum Foils by Shocks in PMMA,
Abstract
Calculations were performed which give the flow induced in adjoining slabs of PMMA and aluminum as a shock wave propagates through the composite plate. Two cases were investigated: the aluminum foil embedded in the PMMA and the foil on the free surface of the PMMA toward which the shock propagated. In order to simplify the calculations, the shock was driven by a piston, i.e., its amplitude was independent of time. Also simple approximations for the equations of state of the PMMA and aluminum were used. Results were obtained by two methods: an artificial viscosity computer code and a graphical method. Results of these computations give the time required for the foil to acquire the expected velocity. Such data are useful in understanding the rise time observed in the records from the electromagnetic gage method for measuring particle velocity in the detonation of explosives. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1971
- Accession Number
- AD0722344
Entities
People
- David J. Edwards
- John O. Erkman
Organizations
- Naval Ordnance Laboratory