Abstract
The process of initiation of detonation of pressed desensitized RDX is considered. Pressure profiles were recorded by manganin gauges in different cross sections of a charge and processed by the Lagrange analysis for a reacting flow. The analysis has shown that the decomposition rate immediately behind the initiating wave front is low and increases with increase of pressure in it. A maximum in the dependence of the decomposition rate on the reaction coordinate can be observed when the values of the reaction coordinate are 0.4–0.6.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
B. M. Dobratz (ed.), LLNL Explosives Handbook, Livermore (1981).
K. P. Stanyukovich (ed.), Physics of Explosion [in Russian], Nauka, Moscow (1975).
D. G. Tasker, “Shock initiation and subsequent growth of reaction in explosives and propellants: the low-amplitude shock initiation test, LASI,” Proc. 7th Intern. Symposium on Detonation, Annapolis (1981), pp. 285–298.
Ch. Klee and D. Ludwig, “The sensitivity to initiation of HE-wax compounds at different temperatures,” ibid. Proc. 7th Intern. Symposium on Detonation, Annapolis (1981), pp. 336–342.
M. Kroh, K. Thoma, et al., “Shock sensitivity and performance of several high explosives,” Proc. 8th Intern. Symposium on Detonation, Albuquerque, 1985, New Mexico (1985), pp. 502–508.
G. D. Coley, “The growth of reaction in secondary explosives under transient confinement,” Proc. 6th Intern. Symposium on Detonation, Arlington, Virginia (1976), pp. 290–298.
G. D. Coley and C. E. Whatmore, “The influence of the dynamic compressive strength properties of HE formulations on the growth of reaction,” Proc. 7th Intern. Symposium on Detonation, Annapolis (1981), pp. 17–23.
A. W. Campbell, W. C. Davis, et al., “Shock initiation of solid explosives,” Phys. Fluids,4, No. 4, 511–521 (1961).
J. B. Ramsay and A. Popolato, “Analysis of shock wave and initiation data for solid explosives,” Proc. 4th Intern. Symposium on Detonation, Washington (1965), pp. 233–238.
H. Moulard, J. W. Kury, and A. Declos, “The effect of particle size on the shock sensitivity of cast PBX formulations,” Proc. 8th Intern. Symposium on Detonation, Albuquerque, 1985, New Mexico (1985), V. 1, pp. 248–257.
H. Moulard, “Particular aspect of the explosive particle size effect on shock sensitivity of cast PBX formulation,” Prepr. 9th Symposium on Detonation, Portland (1989), V. 1, pp. 12–17.
A. C. Van der Steen, H. J. Verbeek, and J. J. Meulenbrugge, “Influence of RDX shape on the shock sensitivity of PBX'es,” ibid. Prepr. 9th Symposium on Detonation, Portland (1989), V. 1, pp. 23–27.
K. A. Fleming, R. Bird, et al., “The influence of formulation variables on the growth of reaction in plastic bonded explosives,” Proc. 8th Intern. Symposium on Detonation, Albuquerque, 1985, New Mexico (1985), V. 1, pp. 449–457.
F. P. Bowden and A. D. Yoffe, “Initiation and Growth of Explosions in Liquids and Solids,” University Press, Cambridge (1952).
F. E. Walker and R. J. Wasley, “Critical energy for shock initiation of heterogeneous explosives,” Explosivstoffe,17, 9 (1969).
J. E. Kennedy, “Pressure field in a shock-compressed high explosive,” Proc. 14th Symposium on Combustion, The Combustion Institute, Pittsburgh (1973), pp. 1251–1258.
J. Wackerle, J. O. Johnson, and P. M. Halleck, “Shock initiation of high-density PETN,” Proc. 6th Intern. Symposium on Detonation, San Diego, 1976, Virginia (1976), pp. 20–28.
G. I. Kanel' and A. N. Dremin, “Decomposition of cast TNT in shock waves,” Fiz. Goreniya Vzryva,13, No. 1, 85–91 (1977).
M. Cowperthwaite and R. F. Williams, “Determination of constitutive relationships with multiple gauges in nondivergent waves,” J. Appl. Phys.,42, 456 (1971).
L. Seaman, “Lagrangian analysis for multiple stress or velocity gages in attenuating waves,” J. Appl. Phys.,45, 4303–4314 (1974).
H. C. Vantine, R. B. Rainsberger, et al., “The accuracy of reaction rates inferred from Lagrange analysis and in-situ gauge measurements,” Proc. 7th Intern. Symposium on Detonation, Annapolis (1981), pp. 466–478.
E. L. Lee and C. M. Tarver, “Phenomenological model of shock initiation in heterogeneous explosives,” Phys. Fluids,23, 2362–2372 (1980).
V. F. Lobanov, “Modeling of detonation waves in heterogeneous condensed HE,” Fiz. Goreniya Vzryva,16, No. 6, 113–115 (1980).
S. A. Bordzilovskii, S. M. Karakhanov, and V. F. Lobanov, “Modeling of shock initiation of heterogeneous HE,” Fiz. Goreniya Vzryva,23, No. 5, 132–147 (1987).
S. A. Bordzilovskii and S. M. Karakhanov, “Initiation of detonation in desensitized RDX,” Abstracts of the Workshop “Fundamental Problems of Shock Wave Physics,” Chernogolovka (1987), V. 1, pt. 1, pp. 26–27.
L. V. Al'tshuler, V. V. Balalaev, et al., “Features of detonation of densensitized HE,” in: Detonation. Chernogolovka (1981), pp. 36–39.
A. V. Utkin, G. I. Kanel', and V. E. Fortov, “Empirical macrokinetics of decomposition of desensitized RDX in shock and detonation waves,” Fiz. Goreniya Vzryva25, No. 5, 115–122 (1989).
L. V. Al'tsuler, G. S. Doronin, and V. S. Zhuchenko, “Detonation regimes and Jouguet parameters of condensed explosives,” Fiz. Goreniya Vzryva,25, No. 2, 84–93 (1989).
M. Cowperthwaite, “A constitutive model for calculating chemical energy release rates from the flow fields in shocked explosives” Proc. 7th Intern. Symposium on Detonation, Annapolis (1981), pp. 498–505.
Additional information
Institute of Hydrodynamics, Russian Academy of Sciences, Novosibirsk 630090. Translated from Fizika Goreniya i Vzryva, Vol. 31, No. 3, pp. 110–117, May–June, 1995.
Rights and permissions
About this article
Cite this article
Bordzilovskii, S.A., Karakhanov, S.M. Investigation of shock initiation of desensitized RDX. Combust Explos Shock Waves 31, 368–375 (1995). https://doi.org/10.1007/BF00742684
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00742684