H-Division quarterly report, April--June 1978. [LLL]

Technical Report · Fri Aug 04 00:00:00 EDT 1978

OSTI ID:6552038

The Theoretical EOS (equation of state) Group develops theoretical techniques for describing material properties under extreme conditions and constructs EOS tables for specific applications. Work is reported on the following topics: observation and model for dynamic effects in shock data of polymorphic solids; a theory of melting curve extrema; calculation and tabulation of isoelectronic energy levels from He to Ni; EOS of compressed T = 0 copper; pressure ionization in compressed Al and Cs. The Experimental Physics Group investigates the properties of materials at extreme conditions of pressure and temperature, and develops new techniques for these investigations; it also studies the response of materials to a wide range of dynamic pressures and temperatures. Work is reported on the following topics: Hugoniot measurements on liquid Ar; flash x-ray diffraction; preliminary specific heat results for liquid Ir to 5700K. The Fluid Physics Group is concerned with the study of nonequilibrium and rate-dependent constitutive properties such as turbulence, viscosity, electrical and thermal conductivity, and optical properties of fluids; it also carries out computer simulations of fluid flow. Work is reported on the following topics: the viscosity of Li, H, and LiH; turbulence transport in gun barrel propellant erosion; exact free-volume calculation; steady-state dislocation motion; viscous effects on turbulent-jet flow near nozzle exit. The work of the Solid Mechanics Group includes the physics of crack initiation and propagation in ductile steels and fluid--structure interaction in nuclear pressure vessel containment structures. Work is reported on the following topics: target penetration; target surface response to penetration; numerical simulations of the Cabriolet event. 29 figures, 2 tables. (RWR)

• Research Organization: California Univ., Livermore (USA). Lawrence Livermore Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6552038
• Report Number(s): UCRL-50028-78-2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
74 ATOMIC AND MOLECULAR PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
MATERIALS
RESEARCH PROGRAMS
LAWRENCE LIVERMORE LABORATORY
PRESSURE DEPENDENCE
TEMPERATURE DEPENDENCE
VERY HIGH PRESSURE
VERY HIGH TEMPERATURE
SHOCK WAVES
MELTING
ATOMS
ENERGY LEVELS
COPPER
EQUATIONS OF STATE
ALUMINIUM
CESIUM
IONIZATION
ARGON
LIQUIDS
X-RAY DIFFRACTION
IRIDIUM
SPECIFIC HEAT
ULTRAHIGH TEMPERATURE
HYDROGEN
LITHIUM
LITHIUM HYDRIDES
VISCOSITY
TURBULENCE
TURBULENT FLOW
VISCOUS FLOW
CRACKS
STEELS
CABRIOLET EVENT
GROUND MOTION
SIMULATION
ALKALI METAL COMPOUNDS
ALKALI METALS
ALLOYS
COHERENT SCATTERING
CRATERING EXPLOSIONS
CROSSTIE OPERATION
CRYOGENIC FLUIDS
DIFFRACTION
ELEMENTS
EQUATIONS
EXPLOSIONS
FLUID FLOW
FLUIDS
HYDRIDES
HYDROGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
LITHIUM COMPOUNDS
METALS
MOTION
NATIONAL ORGANIZATIONS
NONMETALS
NUCLEAR EXPLOSIONS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PLATINUM METALS
PLOWSHARE PROJECT
RARE GASES
REFRACTORY METALS
SCATTERING
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
UNDERGROUND EXPLOSIONS
US AEC
US DOE
US ERDA
US ORGANIZATIONS
360103* - Metals & Alloys- Mechanical Properties
360104 - Metals & Alloys- Physical Properties
640302 - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory
640420 - Fluid Physics- Properties & Structure of Fluids- (-1987)
450201 - Military Technology
Weaponry
& National Defense- Nuclear Explosions & Explosives- Containment