Nature of the buildup to detonation in solid high explosives during plane shock initiation. [PBX-9404 and PBX-9502]

Conference · Tue Jan 01 04:00:00 EST 1980

OSTI ID:5375765

Dick, J J

Two models for the initiation process are compared to results of experimental studies of initiation of detonation in two high explosives, PBX-9404 (HMX-based) and PBX-9502 (TATB-based), by sustained shock waves. A critical examination of the model known as single-curve buildup is made. Several comparisons are made with experimental results for the two explosives. The model describes the observed shock trajectories moderately well although it has some limitations. These are manifested by an examination of the relation between input pressure and distance of run to detonation. The data are also compared with model solutions for the initiation process which assume self-similar flow. The model can fit the experimental shock trajectory reasonably well but difficulties are encountered in attempting to complete the solution for the entire flow field. For PBX-9404, published pressure-time profiles are examined for self-similar character. The measured profiles show substantial disagreement with the similarity model.

• Research Organization: Los Alamos Scientific Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5375765
• Report Number(s): LA-UR-80-329; CONF-800809-3
• 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
DATA
DETONATIONS
EXPERIMENTAL DATA
EXPLOSIVES
IMPACT SHOCK
INFORMATION
MATHEMATICAL MODELS
NUMERICAL DATA
PERFORMANCE TESTING
PRESSURE GRADIENTS
SHOCK WAVES
TESTING
TIME DEPENDENCE