Three-dimensional hydrodynamic hot-spot model. [HMX, nitroguanidine; interactions of shock waves and voids]

Conference · Mon Dec 31 23:00:00 EST 1984

OSTI ID:5780913

Mader, C L; Kershner, J D

The interaction of a shock wave with a single air hole and a matrix of air holes in PETN, HMX, and TATB has been numerically modeled. The hot-spot formation, interaction, and the resulting buildup toward detonation were computed using three-dimensional numerical Eulerian hydrodynamics with Arrhenius chemical reaction and accurate equations of state according to the hydrodynamic hot-spot model. The basic differences between shock sensitive explosives (PETN, HMX) and shock insensitive explosives (TATB, NQ) may be described using the hydrodynamic hot-spot model. The reactive hydrodynamics of desensitization of heterogeneous explosives by a weak preshock has been numerically modeled. The preshock desensitizes the heterogeneous explosive by closing the air holes and making it more homogeneous. A higher pressure second shock has a lower temperature in the multiple shocked explosive than in single shocked explosives. The multiple shock temperature may be low enough to cause a detonation wave to fail to propagate through the preshocked explosive. 10 refs., 12 figs.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5780913
• Report Number(s): LA-UR-85-742; CONF-850706-6; ON: DE85009587
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450100* -- Military Technology
Weaponry
& National Defense-- Chemical Explosions & Explosives
ACTIVATION ENERGY
ARRHENIUS EQUATION
CHEMICAL EXPLOSIVES
DATA
DETONATIONS
ENERGY
EQUATIONS
EQUATIONS OF STATE
ESTERS
EXPLOSIVES
FLUID MECHANICS
HYDRODYNAMICS
INFORMATION
MATHEMATICAL MODELS
MECHANICS
NITRATES
NITRIC ACID ESTERS
NITROGEN COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PETN
SHOCK WAVES
TATB
THREE-DIMENSIONAL CALCULATIONS