Abstract:
The critical detonation diameter of industrial explosive charges is analyzed as a function of their state characteristics (composition, density, and structure) and the presence of a casing. The main reason for the increase in the critical diameter with increasing density of ammonium nitrate explosive charges is the reduction in the energy release rate in the chemical reaction zone of the detonation wave. The effect of the particle size of the components and the amount of the sensitizing component on the critical diameter of powdered and granular explosives fits into the concept of explosive combustion. An analytical formula for the critical detonation diameter of emulsion explosives is obtained which correctly describes experimental data. A possible mechanism of the effect of metal casings on the critical detonation diameter is considered for porous explosives whose detonation velocity is lower than the sound velocity in the casing.
Citation:
I. F. Kobylkin, “Critical detonation diameter of industrial explosive charges: Effect of the casing”, Fizika Goreniya i Vzryva, 47:1 (2011), 108–114; Combustion, Explosion and Shock Waves, 47:1 (2011), 96–102
\Bibitem{Kob11}
\by I.~F.~Kobylkin
\paper Critical detonation diameter of industrial explosive charges: Effect of the casing
\jour Fizika Goreniya i Vzryva
\yr 2011
\vol 47
\issue 1
\pages 108--114
\mathnet{http://mi.mathnet.ru/fgv1073}
\elib{https://elibrary.ru/item.asp?id=16232883}
\transl
\jour Combustion, Explosion and Shock Waves
\yr 2011
\vol 47
\issue 1
\pages 96--102
\crossref{https://doi.org/10.1134/S0010508211010138}
Linking options:
https://www.mathnet.ru/eng/fgv1073
https://www.mathnet.ru/eng/fgv/v47/i1/p108
This publication is cited in the following 5 articles:
N. P. Satonkina, A. P. Ershov, D. A. Medvedev, “Electric conductivity at the detonation of trinitrotoluene charges with different structures, densities, and additives”, Physics of Fluids, 36:7 (2024)
M. A. Sokolov, S. M. Dolgikh, E. B. Smirnov, “Influence of the dynamic rigidity of shells on the critical detonation thickness of a low-sensitivity explosive”, Combustion, Explosion and Shock Waves, 60:2 (2024), 233–237
N.P. Satonkina, K.E. Kuper, A.P. Ershov, E.R. Pruuel, A.S. Yunoshev, Ya.L. Lukyanov, D.V. Gusachenko, A.S. Khorungenko, A.A. Kuzminykh, “Tomographic study of the structure of cast and pressed trotyl charges”, Results in Engineering, 16 (2022), 100621
Mohammad Hossein Keshavarz, Thomas M. Klapötke, “A novel method for prediction of the critical diameter of solid pure and composite high explosives to assess their explosion safety in an industrial setting”, Journal of Energetic Materials, 37:3 (2019), 331
D.A. Fredenburg, A. Jakus, T. McCoy, J. Cochran, N. Thadhani, “Geometry dependent reaction response of Ta + Bi2O3 thermite powder filled linear cellular alloys”, Materials Chemistry and Physics, 144:3 (2014), 318
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