Improving the Material Response for Slow Heat of Energetic Materials

Conference · Mon Mar 08 00:00:00 EST 2010

OSTI ID:992748

Nichols, A L

The goal of modern high explosive slow heat cookoff modeling is to understand the level of mechanical violence. This requires understanding the coupled thermal-mechanical-chemical system that such an environment creates. Recent advances have improved our ability to predict the time to event, and we have been making progress on predicting the mechanical response. By adding surface tension to the product gas pores in the high explosive, we have been able to reduce the current model's tendency to overpressurize confinement vessels. We describe the model and demonstrate how it affects a LX-10 STEX experiment. Issues associated with current product gas equations of state are described and examined.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 992748
• Report Number(s): LLNL-CONF-425262; TRN: US201022%%516
• Resource Relation: Conference: Presented at: 14th International Detonation Symposium, Coeur d'A;ene, ID, United States, Apr 11 - Apr 16, 2010
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHEMICAL EXPLOSIVES
HEATING
TIME DEPENDENCE
RESPONSE FUNCTIONS
MATHEMATICAL MODELS
EQUATIONS OF STATE
EXPLOSIONS
SURFACE TENSION