Comparison of experimental shock-wave profiles for tungsten and computer simulations using a rate-dependent constitutive model
Conference
·
OSTI ID:6036032
The Steinberg-Guinan-Lund, rate-dependent, constitutive model for Ta has been applied to W. Computer simulation successfully predicts the elastic precursor ahead of the second shock in a series of double-shock experiments. Based on the Cochran-Banner spall model, the spall strength of W is 0.9 +- 0.1 GPa, independent of loading stress from 10 to 200 GPa. The model provides an explanation of why some quasi-isentropes appear stiffer than the principal Hugoniot. 8 refs., 13 figs.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6036032
- Report Number(s):
- UCRL-100168; CONF-890661-3; ON: DE89006158
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
656003* -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
ELEMENTS
MECHANICAL PROPERTIES
METALS
SHOCK WAVES
SIMULATION
STRAINS
STRESSES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENTS
TUNGSTEN
360103 -- Metals & Alloys-- Mechanical Properties
656003* -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
ELEMENTS
MECHANICAL PROPERTIES
METALS
SHOCK WAVES
SIMULATION
STRAINS
STRESSES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENTS
TUNGSTEN