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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.142 SNIP: 0.16 CiteScore™: 0.29

ISSN Imprimir: 2150-766X
ISSN En Línea: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2013007509
pages 487-509

MODELING AND SIMULATION OF PLASTIC-BONDED EXPLOSIVE MECHANICAL INITIATION

Didier Picart
CEA, DAM Le Ripault, F-37260 Monts, France
J. Ermisse
CEA, DAM Le Ripault, F-37260 Monts, France
M. Biessy
CEA, DAM Le Ripault, F-37260 Monts, France
E. Bouton
CEA, DAM Le Ripault, F-37260 Monts, France
H. Trumel
CEA, DAM Le Ripault, F-37260 Monts, France

SINOPSIS

The combustion to deflagration or detonation phenomenon in HMX-based pressed explosives is still poorly understood and as a result badly predicted today. Safety studies of pyrotechnic structures thus find benefit from a prediction of ignition conditions preliminary to any runaway of the reaction, especially in the case of moderate mechanical impulses such as falls or impacts. A mechanical constitutive law is proposed as well as a mechanism of hot spot formation by local heat due to friction. This engineering model has been implemented in a finite element code. Simulations of a large database show a reasonably good agreement with data.


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