Multiple shock initiation of LX-17
The response of the insensitive TATB-based high explosive LX-17 to multiple shock impacts is studied experimentally in a four inch gas gun using embedded manganin gauges and numerically using the ignition and growth reactive flow model of shock initiation and detonation. Pressure histories are reported for LX-17 cylinders which are subjected to sustained shock pulses followed by secondary compressions from shocks reflected from metal discs attached to the backs of the explosive targets. These measured and calculated pressure histories show that the threshold for hot spot growth in LX-17 is 7 GPa, that LX-17 can be dead pressed at slightly lower pressures, and that the reaction rates behind reflected shocks increase greatly as the impedance of the metal increases. A study of the response of LX-17 to the collision of two reacting, diverging shocks forming a Mach stem wave inside the LX-17 charge demonstrated that this interaction can result in a high pressure region of sufficient size and strength to cause detonation under certain conditions.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10190820
- Report Number(s):
- UCRL-JC-111342; CONF-930713-30; ON: DE94001524; TRN: 93:003961
- Resource Relation:
- Conference: 10. detonation symposium,Boston, MA (United States),12-16 Jul 1993; Other Information: PBD: Jul 1993
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
EXPLOSIVES
IGNITION
COMBUSTION
MATHEMATICAL MODELS
EXPLOSIONS
SHOCK WAVES
CHEMICAL REACTIONS
THERMAL EQUILIBRIUM
DETONATIONS
COMPUTERIZED SIMULATION
450100
400800
CHEMICAL EXPLOSIONS AND EXPLOSIVES
COMBUSTION, PYROLYSIS, AND HIGH-TEMPERATURE CHEMISTRY