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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
Article

Abstract

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.

Keywords

Boundary Layer Explosive Radial Flow Viscoelastic Model Explosive Charge 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Publishing Corporation 1993

Authors and Affiliations

  • A. V. Dubovik

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