It`s material strength, not a negative Grueneisen gamma

Conference · Mon Feb 01 00:00:00 EST 1993

OSTI ID:10172704

Sinz, K H.P.H.; Moss, W C

Hydrocode simulations of CORRTEX data (shock position as a function of time) require a model for the material properties of the medium in which the explosion occurs. Prior to the BULLION underground nuclear test, Furnish performed gun experiments on core samples that were taken from a satellite hole near the working point. The authors have analyzed some of these data and constructed a constitutive model that is consistent with the gun data. The model consists of a Mie-Grueneisen equation of state that is parameterized using the Hugoniot, a Grueneisen gamma that is only volume dependent, and a pressure dependent strength model. Previous analyses of these particular experiments have ignored material strength, because of its lack of influence on numerical simulations of the CORRTEX data. However, if strength is excluded, negative gammas are required to fit Furnish`s data, but these negative gammas give an extremely poor fit to the CORRTEX field data. The simple model, which includes strength, has a positive volume dependent gamma. The model fits Furnish`s laboratory data and the measured experimental CORRTEX data. What is remarkable about the model is that all of the parameters in it can be obtained from the gun data, indicating that laboratory experiments of this type (and perhaps others) on core samples are potentially more useful than believed previously.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 10172704
• Report Number(s): UCRL-JC-112880; CONF-930397-6; ON: DE93016992; TRN: 93:016664
• Resource Relation: Conference: Numerical modeling for underground nuclear test monitoring symposium,Durango, CO (United States),23-25 Mar 1993; Other Information: PBD: Feb 1993
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
NUCLEAR EXPLOSIONS
BLAST EFFECTS
UNDERGROUND EXPLOSIONS
SOILS
TESTING
MECHANICAL PROPERTIES
NUCLEAR EXPLOSIVES
C CODES
DRILL CORES
540210
450201
450300
350300
BASIC STUDIES
CONTAINMENT
NUCLEAR EXPLOSION DETECTION
VERIFICATION