A numerical and analytical investigation of Rayleigh-Taylor instability in a solid tungsten plate

Technical Report · Wed Jul 01 04:00:00 EDT 1987

DOI:https://doi.org/10.2172/6228683· OSTI ID:6228683

Robinson, A C; Swegle, J W

The Rayleigh-Taylor instability response of an elastic-plastic tungsten plate is investigated by numerical experiments and an approximate modal analysis. The so-called ''minimum amplitude'' instability criteria derived from plasticity analyses is shown to be incomplete as a general indicator of instability or stability at very large driving pressures. Model equations are derived which are able to reproduce the basic qualitative features of the observed instability response given by the numerical calculations. 11 refs., 29 figs.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6228683
• Report Number(s): SAND-87-0766; ON: DE87013593
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
656000* -- Condensed Matter Physics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANALYTICAL SOLUTION
DATA
EIGENFUNCTIONS
ELEMENTS
FINITE DIFFERENCE METHOD
FUNCTIONS
INFORMATION
INSTABILITY
ITERATIVE METHODS
METALS
NUMERICAL DATA
NUMERICAL SOLUTION
RAYLEIGH-TAYLOR INSTABILITY
THEORETICAL DATA
TRANSITION ELEMENTS
TUNGSTEN