TITLE

NON-SHOCK INITIATION MODEL FOR EXPLOSIVE FAMILIES: EXPERIMENTAL RESULTS

AUTHOR(S)
Anderson, M. U.; Todd, S. N.; Caipen, T. L.; Jensen, C. B.; Hughs, C. G.
PUB. DATE
December 2009
SOURCE
AIP Conference Proceedings;12/28/2009, Vol. 1195 Issue 1, p357
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The “DaMaGe-Initiated-Reaction” (DMGIR) computational model has been developed to predict the response of high explosives to non-shock mechanical insults. The distinguishing feature of this model is the introduction of a damage variable, which relates the evolution of damage to the initiation of a reaction in the explosive, and its growth to detonation. Specifically designed experiments were used to study the initiation process of each explosive family with embedded shock sensors and optical diagnostics. The experimental portion of this model development began with a study of PBXN-5 to develop DMGIR model coefficients for the rigid plastic bonded family, followed by studies of the cast, and bulk-moldable explosive families. The experimental results show an initiation mechanism that is related to input energy and material damage, with well defined initiation thresholds for each explosive family. These initiation details will extend the predictive capability of the DMGIR model from the rigid family into the cast and bulk-moldable families.
ACCESSION #
47376000

 

Related Articles

  • CHARACTERISATION OF AN EXPLODING FOIL INITIATOR (EFI) SYSTEM. Davies, H. R.; Chapman, D. J.; Vine, T. A.; Proud, W. G. // AIP Conference Proceedings;12/28/2009, Vol. 1195 Issue 1, p283 

    Exploding Foil Initiators (EFIs) provide a safe and reliable means of initiating explosives. They are highly insensitive to mechanical shock and electrical interference, requiring a specific high current pulse for initiation. This allows the use of insensitive secondary explosives, eliminating...

  • Detonation Wave Profile in PBX 9501. Menikoff, Ralph // AIP Conference Proceedings;2006, Vol. 845 Issue 1, p986 

    Measurements of a CJ-detonation wave in PBX 9501 with a VISAR technique have shown a classical ZND profile for the reaction zone. This is compatible with one-dimensional simulations using realistic equations of state and an Arrhenius reaction rate fit to available data from other experiments....

  • Quantification of reaction violence and combustion enthalpy of plastic bonded explosive 9501 under strong confinement. Perry, W. Lee; Dickson, Peter M.; Parker, Gary R.; Asay, B. W. // Journal of Applied Physics;1/15/2005, Vol. 97 Issue 2, p023528 

    The confinement experienced by an explosive during thermal self-initiation can substantially affect performance in terms of deflagration–to–detonation characteristics and explosion/detonation violence. To this end, we have developed an experiment to quantitatively observe enthalpy...

  • NON-SHOCK INITIATION MODEL FOR EXPLOSIVE FAMILIES: NUMERICAL RESULTS. Todd, S. N.; Anderson, M. U.; Caipen, T. L.; Grady, D. E. // AIP Conference Proceedings;12/28/2009, Vol. 1195 Issue 1, p361 

    A damage initiated reaction (DMGIR) computational model is being developed for the CTH shock physics code to predict the response of an explosive to non-shock mechanical insults. The distinguishing feature of this model is the introduction of a damage variable, which relates the evolution of...

  • COMPUTATIONAL COMPARISONS OF HOMOGENEOUS AND STATISTICAL DESCRIPTIONS OF AEROMET100 STEEL SUBJECTED TO EXPLOSIVE LOADING. Hopson, M. V.; Scott, C. M. // AIP Conference Proceedings;12/28/2009, Vol. 1195 Issue 1, p1077 

    Computational continuum codes can provide many details on the response of metals to explosive loading. However, most “production” level calculations use a homogeneous description of the metal. This representation is incorrect and a statistically compensated Johnson-Cook fracture...

  • Mine Explosives Charging Vehicle.  // Engineering & Mining Journal (00958948);Jan/Feb2006, Vol. 207 Issue 1, p74 

    The article evaluates the Charmec 9825 BE explosives charging machine and offers information on its concept and durability.

  • MECHANICAL RESPONSE OF DAMAGED EXPLOSIVE COMPOSITIONS. Drodge, Daniel R.; Chapman, David J.; Proud, William G. // AIP Conference Proceedings;12/28/2009, Vol. 1195 Issue 1, p1249 

    Polymer-bonded explosive (PBX) materials often exhibit strain-softening as a consequence of increasing microstructural damage. Good mechanical models thus require an account of loading path dependence. For validation purposes, a series of experiments have been carried out on a PBX system,...

  • Model Detonation of Solid Explosives by the Homogeneous Mechanism. Prokhnitsky, L. A. // Combustion, Explosion, & Shock Waves;Mar2003, Vol. 39 Issue 2, p204 

    A two‐phase detonation model of solid porous explosives, which takes into account the compression of solid‐state particles and the presence of a solid component in detonation products, is developed. The homogeneous detonation mechanism based on the Arrhenius‐type reaction is...

  • Optical sensor for the detection of explosives: example of a fluorescent material. Caron, Thomas; Guillemot, Marianne; Veignal, Florian; Montméat, Pierre; Pasquinet, Eric; Prené, Philippe; Perraut, François; Lère-Porte, Jean-pierre; Serein-Spirau, Françoise // AIP Conference Proceedings;May2009, Vol. 1137 Issue 1, p83 

    This paper deals with the detection of nitroaromatic explosives. A specific fluorescent material is devoted to the detection of ultra traces of explosives remaining on clothes. The sensor exhibits a large sensitivity for TNT or DNT vapors.

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics