Shock viscosity and the prediction of shock wave rise times
The present study is focused on viscouslike behavior of solids during large-amplitude compressive stress-wave propagation. Maximum strain rate in the plastic wave has been determined for 30 steady- or near steady-wave profiles obtained with velocity interferometry methods. The materials include six metals, aluminum, beryllium, bismuth, copper, iron, and uranium, and two insulating solids, magnesium oxide and fused silica. A plot of Hugoniot stress versus maximum strain rate for each material is adequately described by eta-dot = asigma/sup m//sub h/. The exponent m is approximately 4 for all materials while the coefficient a is material dependent. A model is developed which incorporates the observed trends of the shock viscosity data in a three-dimensional framework. Finite-difference calculations using the model reproduce the experimental wave profile data.
- Research Organization:
- Sandia National Laboratories, Albuquerque, New Mexico 87185
- OSTI ID:
- 5626567
- Journal Information:
- J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 58:2; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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360103* -- Metals & Alloys-- Mechanical Properties
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Cermets
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360603 -- Materials-- Properties
ACTINIDES
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
ALUMINIUM
BERYLLIUM
BISMUTH
CHALCOGENIDES
COMPRESSION
COPPER
ELEMENTS
INTERFEROMETRY
IRON
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MATHEMATICAL MODELS
METALS
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
RESOLUTION
SHOCK WAVES
SILICA
SILICON COMPOUNDS
SILICON OXIDES
STRAINS
TIME RESOLUTION
TIMING PROPERTIES
TRANSITION ELEMENTS
URANIUM
VISCOSITY