On the explicit determination of the Chapman-Jouguet parameters for an explosive compound

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Authors
  1. Nandlall, D.
Corporate Authors
Defence Research and Development Canada, Valcartier Research Centre, Quebec QC (CAN)
Abstract
This work re-examines earlier development and current advances of the shock Hugoniots in anticipation of developing an explicit solution to determine the Chapman-Jouguet (C-J) parameters for an explosive compound. A new and simple equation for the C-J specific density was obtained as a function of three measureable parameters: initial density, detonation velocity and the heat of detonation. For the ratio of specific heats, ã, an explicit expression as a function of the C-J parameters was obtained. The relations were tested for the very well characterise explosives PETN, HMX, RDX, TATB, TNT and the calculated values obtained for the C-J parameters and ã, compared very well with published experimental values. The equations were then applied to a broad range of explosives types regardless of their heterogeneity or their physical state and the C-J parameters obtained compared very well with published values.
Keywords
explosives;explosive characterisation;Chapman-Jouget parameters;C-J parameters;Hugoniots for explosive materials;Rankine-Hugoniot jump conditions;von Neumann spike parameters;detonation velocity
Report Number
DRDC-RDDC-2014-P67 — External Literature
Date of publication
19 Nov 2014
Number of Pages
33
DSTKIM No
CA039609
CANDIS No
800562
Format(s):
Electronic Document(PDF)

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