Initial free-surface velocities imparted by grazing detonation waves

Backofen, Joseph E.; Weickert, Chris
April 2000
AIP Conference Proceedings;2000, Vol. 505 Issue 1, p919
Academic Journal
Initial free-surface velocities imparted by grazing (side-on) detonation waves were surprisingly found to be predictable simply by dividing by 2 those equations previously developed to describe the initial velocity imparted by normal (head-on) impact of detonation waves. Thus, two equations having a change-over point at one specific ratio of plate thickness to charge length (t/L) [charge thickness for side-on] were found to represent and predict the initial free-surface velocity for a range 0.001 < t/L < 10 for both head-on and side-on propulsion. Such a simple relationship for the initial free-surface velocities may imply that a detonation's thin high-pressure zone behaves as if it is a Poisson-like solid.


Related Articles

  • Detonation wave velocity and curvature of a plastic-bonded, nonideal explosive PBXN-111 as a... Forbes, J. W.; Lemar, E. R. // Journal of Applied Physics;12/15/1998, Vol. 84 Issue 12, p6600 

    Reports on measurement of detonation velocities and wave front curvatures on various diameter cylinders of PBXN-111. Experimental procedure for detonation velocity measurement; Discussion of velocity results; Experimental procedure to measure detonation wave arrival at charge end; Discussion of...

  • Shock to detonation transition in a plastic bonded explosive. Bourne, N.K.; Milne, A.M. // Journal of Applied Physics;3/1/2004, Vol. 95 Issue 5, p2379 

    It is important to define a methodology to assess the safe handling conditions of explosive materials. Such a route must be simple enough to capture relevant mechanisms in order to construct a modeling capability. To this end, a series of plate impact experiments has been undertaken in order to...

  • On the dynamics of self-sustained one-dimensional detonations: A numerical study in the shock-attached frame. Kasimov, Aslan R.; Stewart, D. Scott // Physics of Fluids;Oct2004, Vol. 16 Issue 10, p3566 

    In this work we investigate the dynamics of self-sustained detonation waves that have an embedded information boundary such that the dynamics is influenced only by a finite region adjacent to the lead shock. We introduce the boundary of such a domain, which is shown to be the separatrix of the...

  • Nonclassical steady-state detonation regimes in pressed TNETB. Kolesnikov, S.; Utkin, A. // Combustion, Explosion, & Shock Waves;Nov2007, Vol. 43 Issue 6, p710 

    The reaction zones and the dependence of the velocity of steady-state detonation waves on the initial density of pressed TNETB are studied using a VISAR interferometer. It is shown that, in the range of initial densities of TNETB 1.56–1.77 g/cm3, the propagation of a steady-state...

  • Cutoff of a shaped-charge jet. Malygin, A. V.; Sorokin, M. V.; Fomin, V. M.; Yurchenko, V. V. // Journal of Applied Mechanics & Technical Physics;Sep2009, Vol. 50 Issue 5, p911 

    The process of cutoff of low-velocity areas of a shaped-charge jet with the help of a reverse-action shaped charge adjacent to the base of the shaped charge and having an axial channel where the shaped-charge jet passes is considered. The operation of the cutoff device and the shaped charge is...

  • Physical model of low-velocity detonation in plasticized HMX. Grebenkin, K. F.; Taranik, M. V.; Tsarenkova, S. K.; Shnitko, A. S. // Combustion, Explosion, & Shock Waves;Jan2008, Vol. 44 Issue 1, p92 

    A physical model of low-velocity detonation in plasticized HMX is considered. In this model, a low-velocity detonation wave is a combination of a weak leading shock wave and a subsequent compression wave. This combination is formed by the simultaneous effects of energy release and spreading of...

  • Additional Information Showing That a Cylinder’s Material and Geometry Affect Measuring an Explosive’s Gurney Velocity. Backofen, Joseph E. // AIP Conference Proceedings;2006, Vol. 845 Issue 1, p445 

    Analysis of experimental data from detonation-driven explosive-filled cylinders confirms that an explosive’s Gurney Velocity “constant” is affected by material properties and geometry. A new formula provides a relationship between an explosive’s detonation rate and its...

  • Detonation Propagation in Shock-Compressed Liquid Explosives. Petel, Oren E.; Tanguay, Vincent; Higgins, Andrew J.; Yoshinaka, Akio C.; Fan Zhang // AIP Conference Proceedings;2004, Vol. 706 Issue 1, p883 

    The propagation of detonation in a liquid explosive (nitromethane) that has been precompressed by a shock wave is investigated experimentally. An explosive donor charge is used to transmit a shock wave into a capsule containing a tube of test explosive (sensitized nitromethane) perpendicular to...

  • More on D(k) for PBX-9502. Partom, Yehuda // AIP Conference Proceedings;2004, Vol. 706 Issue 1, p879 

    Detonation wave propagation can be efficiently calculated using the Detonation Shock Dynamics (DSD) model. The main part of DSD is the detonation velocity versus front curvature relation D(k). D(k) is usually determined from breakout front shapes z(r) obtained from rate stick tests, as reported...


Read the Article


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

Try another library?
Sign out of this library

Other Topics