Numerical modeling of gun experiments with impact velocities less than SDT threshold: thermal explosion initiated by friction heat
One- and two-dimensional calculations have been made to model thermal explosion ignited by friction heat, hypothesized as an initiation mechanism for the unknown XDT phenomenon that is responsible for detonations observed in gun experiments with impact velocities less than threshold for shock-to-detonation transition. Preliminary results reported here suggest that friction-induced thermal explosion would be quenched by cooling associated with side rarefactions after penetrating only a thin layer of the propellant. Other effects (not modeled here) would be expected to increase the calculated heating rates or speed up the friction-induced thermal explosion. For this reason, friction cannot be ruled out as an initiation mechanism on the basis of the results described here.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5553017
- Report Number(s):
- LA-9054-MS; ON: DE82010903
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CHEMICAL EXPLOSIONS
MATHEMATICAL MODELS
CHEMICAL EXPLOSIVES
DETONATIONS
HEAT TRANSFER
SHOCK WAVES
FRICTION
TEMPERATURE DISTRIBUTION
ENERGY TRANSFER
EXPLOSIONS
EXPLOSIVES
450100* - Military Technology
Weaponry
& National Defense- Chemical Explosions & Explosives