Interpolation of detonation parameters from experimental particle-velocity records

Conference · Wed Dec 31 23:00:00 EST 1980

OSTI ID:6795511

Hayes, B; Tarver, C M

Measurements from a high resolution particle velocity gauge system are used to investigate reaction zone profiles in several detonating heterogeneous explosives. The analysis of the measured particle motion provides a detailed characterization of the detonation wave front. A major finding is that not all secondary explosives exhibit particle velocity, pressure and volume profiles consistent with the Zeldovich-von Neumann-Doring (ZND) model of a detonation front. For example, the experimental rise time of the pressure profile in triaminotrinitrobenzine (TATB) is approximately 70 nanoseconds measured with equipment displaying 10 nanosecond resolution for shock waves in inert materials. Hydrodynamic computer code modeling of the experimental records using the ignition and growth reactive flow concept has been used to verify the time response of the particle velocity probe and to interpret the results. Detonation parameter profiles in TATB can be simulated by modifying the ZND-type ignition and growth model to include either a viscous dissipation process coupled with exothermic reaction, or a two-step chemical reaction sequence in which an endothermic reaction precedes the exothermic reaction that sustains steady detonation wave propagation.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6795511
• Report Number(s): UCRL-84987; CONF-810602-24
• 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
CHEMICAL EXPLOSIVES
CHEMICAL REACTIONS
COMPUTER CALCULATIONS
DATA
DETONATIONS
EXPERIMENTAL DATA
EXPLOSIVES
INFORMATION
MATHEMATICAL MODELS
NUMERICAL DATA
PARTICLE KINEMATICS
SHOCK WAVES
THEORETICAL DATA
WAVE PROPAGATION