Modeling short pulse duration shock initiation of solid explosives

Conference · Thu Jun 27 00:00:00 EDT 1985

OSTI ID:5571329

Tarver, C M; Hallquist, J O; Erickson, L M

The chemical reaction rate law in the ignition and growth model of shock initiation and detonation of solid explosives is modified so that the model can accurately simulate short pulse duration shock initiation. The reaction rate law contains three terms to model the ignition of hot spots by shock compression, the slow growth of reaction from these isolated hot spots, and the rapid completion of reaction as the hot spots coalesce. Comparisons for PBX 9404 between calculated and experimental records are presented for the electric gun mylar flyer plate system, the minimum priming charge test, embedded manganin pressure and particle velocity gauges, and VISAR particle velocity measurements for a wide variety of input pressures, rise times and pulse durations. The ignition and growth model is now a fully developed phenomenological tool that can be applied with confidence to almost any hazard, vulnerability or explosive performance problem. 27 refs., 16 figs., 2 tabs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5571329
• Report Number(s): UCRL-91484; CONF-850706-25; ON: DE85014803
• Resource Relation: Conference: 8. international symposium on detonation, Albuquerque, NM, USA, 15 Jul 1985; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
CHEMICAL EXPLOSIVES
DETONATIONS
IGNITION
MATHEMATICAL MODELS
CHEMICAL REACTION KINETICS
COMPRESSION
SHOCK WAVES
VELOCITY
EXPLOSIVES
KINETICS
REACTION KINETICS
450100* - Military Technology
Weaponry
& National Defense- Chemical Explosions & Explosives