Combustion, Explosion and Shock Waves

, Volume 29, Issue 2, pp 204–211 | Cite as

Viscoelastic model of impact ignition of solid explosives

  • A. V. Dubovik


A physicomathematical model is developed for the nonisothermal deformation of a disk, which is made of an incompressible, elastoplastic material, during an impact. The model takes into account the formation in the radial flow of viscous boundary layers at the contact boundaries on the striker and the anvil. In spite of their small thickness and the short duration, the boundary layers serve as effective concentrators of the dissipated impact energy and play a decisive role in the processes of thermal softening of the material and of the disk disintegration. The model is used to compute the critical conditions and the principal characteristics for the mechanical initiation of solid explosive charges. The good agreement between the theoretical and experimental data on the impact sensitivity of the explosive lends support to our concepts of the nature of explosion initiation using mechanical effects, on which the model was founded.


Boundary Layer Explosive Radial Flow Viscoelastic Model Explosive Charge 
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  1. 1.
    A. V. Dubovik and M. V. Lisanov, “Calculation of the critical parameters for the initiation of solid explosives by means of an impact on the body,” Fiz. Goren. Vzryva,21, No. 4, 87–93 (1985).Google Scholar
  2. 2.
    A. V. Dubovik, M. V. Lisanov, and E. A. Avdeev, “Calculation of the initiation parameters for solid explosives taking into account the localization of the plastic deformation due to an impact,” Khim. Fiz.,5, No. 4, 539–547 (1986).Google Scholar
  3. 3.
    V. P. Myasnikov, “Problem formulation for the flow of an elastoplastic liquid over a body,” Prikl. Mekh. Tekh. Fiz., No. 4, 52–59 (1962).Google Scholar
  4. 4.
    A. M. Gutkin, “Slow compression of an elastoplastic dispersed system,” Kolloid. Zh.,24, No. 1, 8–10 (1962).Google Scholar
  5. 5.
    V. P. Myasnikov, “Squeezing of an elastoplastic layer with rigid plates,” Izv. Akad. Nauk SSSR. Mekh. i Mashinostr., No. 4, 92–97 (1963).Google Scholar
  6. 6.
    V. K. Bobolev, V. L. Bodneva, and A. V. Dubovik, “Deformation of lead disks by impact,” Prikl. Mekh. Tekh. Fiz. No. 5, 153–158 (1975).Google Scholar
  7. 7.
    É. I. Andriankin, “Impact-produced spreading of a viscous drop,”ibid. No. 5, 142–145 (1966).Google Scholar
  8. 8.
    G. T. Afanas'ev and V. K. Bobolev, Impact Initiation of Solid Explosives [in Russian], Nauka, Moscow (1968).Google Scholar
  9. 9.
    K. N. G. Fuller, P. G. Fox, and J. E. Field, “The temperature rise at the tip of fast-moving cracks in glassy polymers,” Proc. Roy. Soc. London. Ser. A,341, No. 1627 537–557 (1975).Google Scholar
  10. 10.
    E. A. Avdeev and A. V. Dubovik, “Effect of the loading rate on the disintegration and ignition parameters for thin layers of solid explosives,” Khim. Fiz.,7, No. 5, 688–693 (1988).Google Scholar
  11. 11.
    V. I. Dolgov and I. A. Karpukhin, “Initiation of solid nitroglycerine by impact,” in Detonation and Shock Waves: Proc. 8th All-Union Symp. on Comb. and Explosion, Chernogolovka, 99–101 (1986), pp. 99–101.Google Scholar

Copyright information

© Plenum Publishing Corporation 1993

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  • A. V. Dubovik

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